body {
  color: #2b2b2b;
}

.header {
  background-image: url("../img/background-bridge.webp");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  height: 35vh;
  /* color: white; */
  overflow: hidden;
  z-index: -99;
}

.lang {
  display: none;
}
.lang.lang-active {
  display: block;
}

#conference-title {
  color: rgb(35, 126, 14);
}

#about {
  text-align: justify;
}

.speaker-image {
  max-width: 200px;
  float: right;
  margin-right: 15px;
}

.sticky-top {
  top: 20px;
}
.sidebar-link {
  text-decoration: none;
  color: #143399;
  /* font-weight: 500; */
}
.sidebar-link:hover {
  color: #0a1a50;
  text-decoration: underline;
}

@media (max-width: 730px) {
  #about,
  #key-speaker {
    text-align: left;
    margin-left: 4vh;
    margin-right: 4vh;
  }
}
@media (max-width: 440px) {
  .speaker-image {
    float: none;
    display: block;
    margin: 0 auto 15px auto;
  }
}