html,
body {
  font-family: "montserrat", "arial", "微軟正黑體", "Microsoft JhengHei", "微软雅黑", "Microsoft YaHei", sans-serif !important;
  margin: 0 0;
  padding: 0 0;
}

/*------------ color ------------*/
:root {
  --red: #D71921;
  --black: #000000;
  --white: #FFF;
  --purple: #5b0bb6;
  --xl_padding:6%;
}
/*------------ Fonts -------------*/
@font-face {
  font-family: montserrat;
  src: url(./fonts/Montserrat-Regular.ttf);
  font-weight: 400;
}
@font-face {
  font-family: montserrat;
  src: url(./fonts/Montserrat-Medium.ttf);
  font-weight: 500;
}
@font-face {
  font-family: montserrat;
  src: url(./fonts/Montserrat-Bold.ttf);
  font-weight: 700;
}
h1 {font-size: 70px; font-weight: 700; margin:0;}
h2 {font-size: 46px; font-weight: 700; margin-top: 0; margin-bottom:40px; margin-left:20px;}
h2>span {
  position: relative;
  display: inline-block;
}
h2>span::before{
  content: '';
  background:url('./img/red_cross.svg');
  width:20px;
  height:20px;
  display: block;
  position: absolute;
  left: -20px;
  top:-10px;
  animation: rotateIcon 2s infinite linear;
}
[animate-text]::before { 
  opacity: 0;
}
[animate-text].onComplete::before { 
  animation: fadeIn 0.6s ease-out, rotateIcon 2s infinite linear;
  opacity: 1;
}
@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }  
}
.h2_center {text-align: center; margin-left:auto; margin-right:auto; position:relative;}

p {font-size: 16px; line-height: 32px ; font-weight: 400; margin:0 0 20px 0;}

@keyframes rotateIcon {
  0% {
    transform: rotate(0deg); 
  }
  25% {
      transform: rotate(90deg);
  }
  100% {
      transform: rotate(90deg); 
  }  
}

a {text-decoration: none; color: var(--red);}

ul li {margin-bottom: 15px;}

/*------------ smooth scroll --------*/
body {
  margin: 0;
  overflow-x: hidden;
}
.smooth_scroll_wrap {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  will-change: transform;
}

/*------------ global -----------*/
section {
  width: 100%;
  padding: 120px 0;
  margin: 0;
}
.row {
  display: flex;
  flex-wrap: wrap;
  width: calc(100% + 40px);
  margin-left: -20px;
  margin-right: -20px;
}
.narrow_content {
  padding: 0 10%;
  width: inherit;
}
.col {padding:20px;}
.col-3 {width: calc(25% - 40px);}
.col-4 {width: calc(33.3% - 40px);}
.col-5 {width: calc(41.66666667% - 40px); }
.col-6 {width: calc(50% - 40px);}
.col-7 {width: calc(58.33333333% - 40px);}
.col-8 {width: calc(66.66666667% - 40px);}
.col-9 {width: calc(75% - 40px);}
.col-10 {width: calc(83.33333333% - 40px);}
.col-12 {width: calc(100% - 40px);}

.container {
  display: flex;
  max-width:clamp(992px, 100vw, 2500px);
  padding-right: var(--xl_padding);
  padding-left: var(--xl_padding);
  margin: 0 auto;
}
.content_space {margin-top: 50px;}
.align_center {display: block; margin: 0 auto; }

/*------------ cta_button ------------*/
.cta_button {
  font-size: 16px;
  font-weight: 700;
  padding: 14px 24px;
  border-radius: 50px;
  display:inline-flex;
  position: relative;
  z-index: 1;
  overflow: hidden;
  width: fit-content;
}
.cta_button_right::after {
  content: '';
  width:18px;
  height:18px;
  display: block;
  margin-left: 8px;
  transition: all 0.25s ease-in-out;
}
.cta_button_right:hover::after {
  margin-left: 16px;
}
.cta_button::before {
  content: '';
  display: block;
  width: 0;
  height: 100%;
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: -1;
  transition: width 0.25s ease-in-out;
}
.cta_button:hover::before {
  width: 100%;
}


.cta_button_red {
  color: var(--white);
  background-color: var(--red);
}
.cta_button_red::after {
  background:url('./img/cta_arrow_white.svg');
}
.cta_button_red::before {
  background-color: var(--black);
}

.cta_button_white {
  color: var(--red);
  background-color: var(--white);
}
.cta_button_white::after {
  background:url('./img/cta_arrow_black.svg');
}
.cta_button_white::before {
  background-color: #E9EFF6;
}
/*------------ body ------------*/
.subpage body {
  background:url('./img/subpage_bg.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
}

/*------------ header ------------*/
header {
  width: 100%;
  background-color: rgba(255, 255, 255, 0);
  position: fixed;
  top: 0;
  z-index:1;
  transition: all 0.2s ease-out;
  z-index: 10;
  opacity: 0;
  animation: header_anim 0.8s ease-out;
  animation-delay: 0.4s;
  animation-fill-mode: forwards; 
}
@keyframes header_anim {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
header .col {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
}
.logo_wrap {
  display: flex;
  align-items: center;
}
.logo_wrap a {
  margin-right: 40px;
}
.logo_wrap img {
  width: 100%;
}
.dha_logo {
  width: 210px;
  display: block;
}
.cityu_logo {
  width: 340px;
  display: block;
}
.institute p {
  color:var(--black);
  font-size: 24px;
  line-height: 24px;
  padding: 0;
  margin: 0 ;
  font-weight: 600;
}
.index .institute p { 
  color:var(--white);
}
header li {
  list-style: none;
}
nav ul {
  display: flex;
  flex-direction: row;
  padding: 0;
  border-radius: 100px;
  border: 1px solid var(--black);
}
.index nav ul {
  border: 1px solid var(--white);

  transition: all 0.3s ease-in-out;
}
.index header nav {
  display: flex;
  align-items: center;
}
.sound-btn {
  height: 34px;
  width: 34px;
  display: block;
  margin-right: 20px;
  cursor: pointer;
  background: url(./img/sound_on.svg);
  background-position: center;
}
.sound-btn.sound_off {
  background: url(./img/sound_off.svg);
}
.scrolled .sound-btn {
  background: url(./img/sound_on_black.svg);
  background-repeat: no-repeat;
  background-position: center;
} 
.scrolled .sound_off {
  background: url(./img/sound_off_black.svg);
  background-repeat: no-repeat;
  background-position: center;
} 
.subpage .sound {
  display: none;
}
.nav-list.active {
  max-height: 300px;
}
nav li {
  display: contents;
}
nav ul li a {
  font-size: 18px;
  font-weight: 700;
  padding: 14px 26px ;
  color: var(--black);
  background-color: rgba(255, 255, 255, 0);
  transition: all 0.25s ease-out;
  border-radius: 100px;
}
.index nav ul li a {
  color: var(--white);
}
nav ul li a:hover {
  color: var(--red);
  background-color: rgba(255, 255, 255, 0.7);
}
nav ul li span {
  font-size: 18px;
  font-weight: 700;
  padding: 14px 26px ;
  color: var(--red);
}

/*--- mobile nav ---*/
.hamburger {
  display: none;
  font-size:40px;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
}
.subpage .hamburger {
  color: var(--black);
}
.scrolled .hamburger {
  color: var(--red);
}
.mobile_nav_wrap {
  display: none;
  position: absolute;
  width: 100%;
  height: 100vh;
  background-color:var(--purple);
  top: 0;
  left: -100%;
  z-index: 999;
  transition: all 0.35s ease-in-out;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.mobile_nav_wrap ul { 
  padding: 0;
}
.mobile_nav_wrap li {
  list-style: none;
  margin-bottom: 40px;
}
.mobile_nav_wrap li a {
  color: var(--white);
  font-size: 40px;
  font-weight: 700;
}
.mobile_nav_wrap .close_btn {
  cursor: pointer;
  position: absolute;
  top: 30px;
  right: 30px;
  background: none;
  border: none;
  width: 50px;
}
.mobile_nav_wrap .close_btn img {
  width: 100%;
}

/*----- scrolled header ------*/
header.scrolled {
  background-color: rgba(255, 255, 255, 1);
  z-index: 999;
}
header.scrolled nav ul li a {
  color: var(--black);
}
header.scrolled nav ul {
  border: 1px solid var(--black);
}
header.scrolled nav ul li a:hover {
  color: var(--red);
  background-color: rgba(212, 212, 212, 0.3);
}
header.scrolled .institute p {
  color:var(--black);
}

/*------------ footer ------------*/
footer {
  padding: 20px 0;
  background-color: var(--white);
}
footer .col {
  display: flex;
  justify-content: space-between;
  align-items:center;
}
footer p {
  margin: 0;
}
.footer_logo_wrap {
  display: flex;
}
.footer_logo_wrap a {
  display: flex;
  flex-direction: column;
}
.footer_logo_wrap span {
  font-size: 14px;
  color: var(--black);
  margin-bottom: 15px;
}
.footer_logo_01 {
  width: 150px;
  margin-right: 50px;
}
.footer_logo_02 {
  width: 288px;
  margin-right: 50px;
}
.footer_logo_03 {
  display: flex;
  align-items: center;
}
.footer_logo_03 p {
  font-weight: 600;
  margin:0px;
  font-size: 20px;
  margin-top: 20px;
}

/*------------ main banner ------------*/
.main_banner {
  height: 100vh;
  min-height: 700px;
  width: 100%;
  overflow: hidden;
  position: relative;
  padding: 0;
}
.background-video {
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}
.video_mask {
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  height: 100%;
  z-index: -1;
}
.main_banner .video_mask {
  background-color: var(--black);
  opacity: 30%;
}
.main_banner .container {
  margin-right: var(--xl_padding);
  margin-left: var(--xl_padding);
  position: relative;
  height: 100%;
  padding: 0;
}
.main_banner h1 {
  font-size: clamp(60px, 4.5vw, 80px);
  color: var(--white);
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left:0;
  transform-origin:0 0;
  opacity: 0;
  animation: header_anim 0.8s ease-out;
  animation-delay: 0.6s;
  animation-fill-mode: forwards;
}

.event_info_box {
  position: absolute;
  bottom: 8%;
  right:0;
  width: 400px;
  padding: 20px 40px;
  color: var(--white);
  border: 1px solid var(--white);
  border-radius: 20px;
  opacity: 0;
  animation: header_anim 0.8s ease-out;
  animation-delay: 0.9s;
  animation-fill-mode: forwards;
}
.event_date {
  font-size: 44px;
  line-height: normal;
  background-color: var(--red);
  padding: 2px 12px;
  width: fit-content;
  border-radius: 10px 10px 0 10px;
  margin: 0;
}
.event_month {
  font-size: 30px;
  line-height: normal;
  background-color: var(--red);
  padding: 2px 12px;
  width: fit-content;
  border-radius: 0 10px 10px 10px;
  margin: 0 0 10px 50px;
}
.event_location {
  line-height: normal;
}
.event_location span {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
}
.scroll_down {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 110px;
  border-left: 1px solid var(--red);
  padding-left: 6px;
  width: 100px;
}
.scroll_down::before {
  background-color: var(--red);
  content: '';
  display: block;
  width:8px;
  height:8px;
  border-radius: 50%;
  position: absolute;
  left: -5px;
  top: 0;
  animation: scroll_down_anim 1.5s infinite ease-out;
}
@keyframes scroll_down_anim {
  0% {
    transform: translateY(0px);
    opacity: 1;
  }
  70%{
    opacity: 1;
  }
  100% {
    transform: translateY(100px);
    opacity: 0;
  }
}
.scroll_down span {
  color: var(--white);
  transform: rotate(-90deg);
  display: block;
  font-size: 14px;
  position: absolute;
  left: -20px;
  bottom:50px;
}


/*------------ logo_section ------------*/
.logo_section {
  padding: 30px 0;
  background: linear-gradient(270deg, #E3F0FF 0%, #BDE5FF 100%);
}
.logo_section .container{
  justify-content: space-evenly;
}
.logo_section span {
  font-size: 14px;
  color: var(--black);
  margin-bottom: 15px;
}
.logo_section_logo {
  display: flex;
  flex-direction: column;
}
.logo_section_01 img {
  width: 198px;
}
.logo_section_02 img {
  width: 340px;
}
.logo_section_03 {
  justify-content: center;
}
.logo_section_03 p {
  font-size: 22px;
  font-weight: 600;
  margin: 0;
}

/*------------ collaborating section ------------*/
.collaborating_section {
  width: 100%;
  background: url(./img/collaborating_section_bg.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  overflow: hidden;
  position: relative;
  color: var(--white);
  z-index: 99;
}
.collaborating_section p {
  position: relative;
  z-index: 99;

}
.collaborating_section .video_mask {
  background-color:#112294;
  opacity: 60%;
}
.collaborating_section .container {
  flex-direction: column;
}
.collaborating_section h2 {
  line-height: 100px;
}
.collaborating_section h2::before  {
  top: 15px;
}
.collaborating_title_img {
  display: inline-block;
  position: relative;
  margin: 0 10px;
}
.collaborating_img_rectangle {
  width:170px;
}
.collaborating_img_round {
  width: 82px;
}
.collaborating_title_img img{
  position: absolute;
  top: -54px;
  left: 0;
  width:100%;
}

/*------------ institute section ------------*/
.institute_section .container {
  flex-direction: column;
}

.institute_section h2 {
  position: relative;
  z-index: 1;
}
.institute_img {
  position: relative;
  z-index: 0;
  margin-top: 80px;
  margin-left:-10%;
  display: flex;
  justify-content: flex-end;
}
.institute_img img {
  width: 100%;
  will-change: transform;
}
.institute_img .cross_grey {
  background: url(./img/grey_cross.svg);
  width: 76px;
  height: 76px;
  display: block;
  position: absolute;
  right: 0px;
  bottom: -35px;
  animation: rotateIcon 2s infinite linear;
}
.institute_img .cross_grey:nth-child(2) {
  scale: 0.5;
  right: 80px;
  bottom: 15px;
  animation-delay: 0.15s;
}
.institute_content_left {
  padding-right: 40%;
}
.institute_content_right>div {
  position: relative;
  border-left: 1px solid var(--red);
  padding-left: 20px;
}
.institute_content_right>div::before {
  content: "";
  width: 10px;
  height: 10px;
  background-color: var(--red);
  display: block;
  position: absolute;
  left: -5px;
  top: 0px;
  border-radius: 50%;
}

/*------------ innovating video section ------------*/
.innovating_video_section {
  padding-top: 0;
  position: relative;
}
.innovating_video_section_bg {
  display: block;
  position: absolute;
  bottom: 0;
  z-index: 0;
  height: 50%;
  width: 100%;
  background-color:var(--purple);
  left: 50%;
  transform: translateX(-50%);
  will-change: transform;
}
.innovating_video_section .container {
  position: relative;
  z-index: 1;
}
.innovating_video {
  width: 70%;
  border-radius: 20px;
  will-change: transform;
}

/*------------ president section ------------*/
.president_section {
  padding-top: 0;
  background-color:var(--purple);
  color: var(--white);
  margin-top: -2px;
}
.president_section .container {
  flex-direction: column;
}
.president_section h2 {
  width: 40%;
  margin-left: 44%;
  margin-bottom: 0;
}
.president_section h2>span::before {
  background: url(./img/white_cross.svg);
}
.president_img {
  position: relative;
  margin-top: -12%;
  margin-bottom: 50px;
}
.president_img::before {
  content: '';
  background: url(./img/purple_cross.svg);
  width: 76px;
  height: 76px;
  display: block;
  position: absolute;
  left: 0;
  bottom: 0;
  animation: rotateIcon 2s infinite linear;
}
.president_img img {width: 100%; will-change: transform;}

.professor_info p:nth-child(1) {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
}
.professor_info p:nth-child(2) {
  margin-bottom: 0px;
}

/*------------ subpage  ------------*/
.subpage h1 {
  font-size: clamp(50px, 4.5vw, 60px);
  color: var(--black);
  position: relative;

}
.subpage_section {
  margin-top: 80px;
}
.subpage_section .content_space {
  margin-top: 120px;
}
.subpage_bottom_section {
  padding: 0 0 120px;
}
.subpage_bottom_section .col {
  display: flex;
  justify-content: center;
}
/*------------ Rundown ------------*/
.rundown .container {
  flex-direction: column;
  position: relative;
}
.rundown .content_space::before {
  content: "";
  width: 10px;
  height: 10px;
  background-color: var(--red);
  display: block;
  position: absolute;
  left: -5px;
  top: 0px;
  border-radius: 50%;
}

.rundown h2 {
  font-size: 38px;
  font-weight: 700;
  margin-top: 0;
  margin-bottom: 0;
  margin-left: 0;
}
.rundown .date {
  font-size: 20px;
  font-weight: 700;
  color: var(--red);
}
.rundown_table_row {
  width: calc(100% + 20px);
  margin-left: 0px;
  margin-right: -20px;
  position: relative;
}
.rundown_redline {
  content: "";
  background-color: var(--red);
  width: 1px;
  height: 100%;
  display: block;
  position: absolute;
  left: 6%;
  top: 240px;
}
.rundown_table_row .col{
  padding-top:0px;
  padding-bottom: 100px;
}
.rundown table {
  border: none; 
  border-collapse: collapse;
  width: 100%;
  text-align: left;
  font-size: 16px;
  line-height: 26px;
}
.rundown table th, .rundown table td {
  padding: 20px 20px;
  vertical-align: top;
}
.rundown table tr:nth-child(odd) {
  color: var(--black);
  background-color: var(--white); 
}
.rundown table tr:nth-child(1) {
  color: var(--white);
  background-color: var(--red);
}
.rundown .date_wrap {
  margin-left: 20px;
  position: sticky;
  top: 130px;
}
.rundown .speaker_wrap {
  margin-top: 20px;
}
.rundown .speaker_wrap p {
  margin-bottom:0px;
  line-height: 26px;
}
.rundown .speaker_wrap p:first-child {
  font-weight: 700;
}
.rundown .speaker_wrap .table_speaker {
  font-weight: 500;
  margin: 10px 0 5px;
  display: flex;
  align-items: center;
  color: var(--black);
  width: fit-content;
}
.rundown .speaker_wrap .table_speaker:hover {
  color: var(--red);
}
.rundown .speaker_wrap .table_speaker::before {
  content: '';
  background: url(./img/speaker_link.svg);
  width: 18px;
  height: 18px;
  display: block;
  margin-right: 8px;
}

/*------------ Speakers ------------*/
.speakers .container,
.speakers_detail .container {
  flex-direction: column;
}
.speakers_card>div {
  padding: 0 14px;
}
.speakers .col {
  padding-bottom: 0px;
}
.speakers .col .col {
  padding-bottom: 60px;
}
.speakers .col .col:last-child {
  padding-bottom: 0px;
}
.speakers_card_img {
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 30px;
  position: relative;
  width: 0%;
  padding-top: 100%; 
}
.speakers_card_img img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.2s ease-in-out;
}
.speakers_card:hover img {
  scale: 1.08;
}
.card_mask {
  background-color: var(--purple);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  right: 0;
  transform-origin: right;
  transition: all 0.4s ease-out;
  opacity: 0.9;
}
.onComplete .card_mask {
  width: 0;
  background-color: #963aff;
  opacity: 0.5;
}
.speaker_name {
  font-size: 24px;
  font-weight: 700;
  color: var(--black);
}
.speakers_detail .speaker_name {
  font-size: 30px;
}
.speaker_title {
  font-size: 16px;
  line-height: normal;
  font-weight: 700;
  color: var(--red);
  margin-bottom: 10px;
}
.speaker_unit {
  font-size: 16px;
  line-height: normal;
  font-weight: 500;
  color:#555555;
  margin-bottom: 0;
}
.speaker_description {
  font-size: 16px;
  line-height: 28px;
  color:var(--black);
  margin-top: 30px;
}
.speaker_detail_info {
  margin-left: 20px;
}
.speaker_detail_card {
  margin-top: 50px;
}
.speakers_detail {
  margin-bottom:100px;
}


/*------------ responsive ------------*/
@media (min-width:2050px) {
  .main_banner .container {
    margin: 0 auto;
    width:1920px;
  }
}

@media (max-width: 1399.98px) {
  /*--- header ---*/
  .logo_wrap a {
    margin-right: 30px;
  }
  .dha_logo {
    width: 189px;
  }
  .cityu_logo {
    width: 306px;
  }
  .institute p {
    font-size: 20px;
  }
  nav ul li a, 
  nav ul li span {
    padding: 12px 18px;
  }

  /*--- mobile nav ---*/
  .mobile_nav_wrap.active {
    left: 0;
  }
  /*--- content ---*/
  .container {
    padding-right:4%;
    padding-left:4%;
  }
  /*--- institute section ---*/
  .institute_img .cross_grey:nth-child(2) {
    scale: 0.3;
    right: 60px;
    bottom: 0px;
  }
  .institute_img .cross_grey {
    scale: 0.7;
  }
  /*--- president section ---*/
  .president_section h2 {
    width: 50%;
  }
  .president_img::before {
    bottom: -20px;
    scale: 0.8;
  }
  .rundown_redline {
    left: 4%;
  }
}
@media (max-width: 1279.98px) {
  /*--- header ---*/
  .dha_logo {
    width: 180px;
  }
  .cityu_logo {
    width: 294px;
  }
  .institute p {
    font-size: 16px;
  }
  nav ul li a, 
  nav ul li span {
    font-size: 16px;
    padding: 10px 14px;
  }
  .rundown_redline {
    top:238px;
  }

  /*--- footer ---*/
  footer .col {
    flex-direction: column-reverse;
  }
  footer p {
    margin-top: 50px;
  }
}

@media (max-width: 1199.98px) {
  /*--- mobile nav ---*/
  .hamburger {
    display: block;
    padding: 0;
  }
  .index nav ul, 
  .subpage nav ul  {
    display: none;
  }

  /*--- institute section ---*/
  .institute_img .cross_grey:nth-child(2) {
    right: 40px;
  }
  .institute_img .cross_grey {
    scale: 0.5;
  }
}

@media (max-width: 991.98px) {
  h2 {
    font-size: 36px;
  }
  h2>span {
    display: inline;
  }
  section {
    padding: 100px 0;
  }
  .container {
    max-width: inherit;
    padding-right:0;
    padding-left:0;
  }
  .row {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
  }
  .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8,
  .col-9, .col-10, .col-11, .col-12 {
    width: calc(100% - 40px);
  }
  .content_space {
    margin-top: 0;
  }
  /*--- header ---*/
  header .col {
    align-items: start;
  }
  .logo_wrap {
    align-items: flex-start;
    flex-direction: column;
  }
  .logo_wrap a {
    margin-bottom: 20px;
  }
  .cityu_logo {
    margin-bottom: 10px;
  }
  .scrolled .dha_logo {
    margin-bottom: 0;
  }
  .scrolled .cityu_logo, 
  .scrolled .institute {
    display: none;
  }
  /*--- main banner ---*/
  .main_banner .container {
    flex-direction: column;
  }
  .main_banner h1 {
    font-size: 50px;
    margin-top: 50%;
    position: relative;
    top:0;
    transform: none;
  }
  .event_info_box {
    position: static;
    width: calc(100% - 40px);
    padding: 16px 16px;
    margin-top: 30px;
  }
  .event_date, .event_month {
    font-size: 28px;
  }
  .scroll_down {
    display:none;
  }
  /*--- logo section ---*/
  .logo_section {
    padding: 40px 0;
  }
  .logo_section .container {
    flex-direction: column;
    align-items: center;
    justify-content: inherit;
  }
  .logo_section_logo {
    align-items: center;
    margin-bottom: 50px;
  }
  .logo_section_03 {
    margin-bottom: 0;
  }
  /*--- collaborating section ---*/
  .collaborating_title_img {
    display: none;
  }
  .collaborating_section h2 {
    line-height:inherit
  }
  .narrow_content {
    padding: 0;
  }
  /*--- institute section ---*/
  .institute_section h2 {
    text-align: center;
    margin-bottom: 0;
  }
  .institute_img {
    margin-top: 0;
    margin-left: 0;
  }
  .institute_content_left {
    padding-right: 0;
  }
  .institute_img .cross_grey:nth-child(2) {
    display: none;
  }
  .institute_img .cross_grey {
    scale: 0.5;
  }
  /*--- video section ---*/
  .innovating_video {
    width:100%;
  }
  /*--- president section ---*/
  .president_section h2 {
    width: inherit;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }
  .president_img {
    margin-top: 0;
  }
  .president_section .cta_button {
    margin-top: 50px;
  }
  .president_img::before {
    bottom: -34px;
  }
  [animate-text]::before {
    opacity: 1;
  }

  /*--- footer ---*/
  footer .col {
    justify-content:inherit;
    align-items: inherit;
  }
  .footer_logo_wrap {
    flex-direction: column;
  }
  footer p {
    margin-top: 80px;
  }
  .footer_logo_wrap a {
    margin: 0 0 50px 0 ;
  }
  .footer_logo_03 p {
    margin-top: 0;
  }
  /*--- subpage ---*/
  .subpage_section {
    margin-top: 150px;
  }
  .subpage h1 {
    font-size: 44px;
  }
  .subpage_section .content_space {
    margin-top: 80px;
  }
  /*--- rundown ---*/
  .rundown_table_row {
    border: none;
    width: 100%;
    margin-left:0;
    margin-right:0;
    position: inherit;
  }
  .rundown .content_space::before,
  .rundown_redline {
    display: none;
  }
  .rundown_table_row .col {
    padding-bottom: 50px;
    padding-left: 20px;
    padding-right: 20px;
  }
  .rundown_table_row .col:first-child {
    padding-bottom: 10px;
  }
  .rundown .date_wrap {
    margin-left: 0;
  }

  /*--- speakers ---*/
  .speaker_list_warp {
    padding: 0;
  }
  .speakers .col {
    width: 100%;
  }
  .speakers .col .col {
    width: calc(50% - 40px);
    padding-top: 0px;
    padding-bottom: 40px;

  }
  .speakers_card>div {
    padding: 0;
  }
  .speakers_card_img {
    border-radius: 10px;
    margin-bottom: 20px;
    width: 100%;
  }
  .card_mask {
    display: none;
  }
  .speakers .speaker_name {
    margin-bottom: 10px;
    font-size: 20px;
    line-height: 24px;
  }

  /*--- speaker detail ---*/
  .speaker_detail_info {
    margin: 0;
  }
}

@media (max-width: 767.98px) {
/*   .dha_logo {
    width:60%;
  }*/
  .cityu_logo {
    width:80%;
    margin-bottom: 10px;
  } 
  .main_banner {
    height: 120vh;
  }
  .main_banner h1 {
    margin-top: 80%;
  }
}