.centered-container{
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  display:flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
}

.column{
  flex: 50%;
  max-width: 50%;
}

.card{
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  padding-top: 20px;
  padding-bottom: 20px;
}

.card-text{
  max-width: 400px;
}

.vertical-center{
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.boxed-item{
  padding: 2%;
  margin-left:5px;
  margin-right:5px;
  margin-top: 1em;
  text-align: justify;
}

.header{
  padding: 10px;
  background-color: #222222;
  font-family: 'Raleway', sans-serif;
}

.footer{
  padding: 10px;
  background-color: #bdbdbd;
}

.reflink{
  color:#555;
  text-decoration: none;
  border-bottom: solid 3px;
  border-color: rgba(0, 0, 0, 0.1);
}

.literature-container{
  background-color: #ececec;
}

.literature-title{
  font-size: 32pt;
  font-family: 'League Gothic',sans-serif;
  font-weight: normal;
  color: black;
}

.youtube-video {
  aspect-ratio: 16 / 9;
  width: 520px;
}

#abstract-big-container {
  background-color: #254185;
}

#abstract2-big-container {
  background-color: #565656;
}


#abstract-small-container{
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

#abstract2-small-container{
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

#dens-x16{
  width: 100%;
}

#abstract-text{
  color: white;
  position: absolute;
  top: 0;
  left: 0;
  padding: 5%;
  font-family: 'Castoro', serif;
  font-size:15pt;
  width: 400px;
}

#abstract2-text{
  color: white;
  position: absolute;
  top: 0;
  left: 0;
  padding: 5%;
  font-family: 'Castoro', serif;
  font-size:15pt;
  width: 400px;
}

#video-ctrl-btn{
  color: rgba(255, 255, 255, 0.5);
  padding: 2px;
  border:none;
  font-family: sans-serif;
  font-size:7pt;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
}

body{
  padding: 0;
  margin: 0;
  font-family: 'Castoro', serif;
  font-size: 13pt;
}

h1{
  margin: 0;
  font-size: 32pt;
  font-family:'League Gothic', sans-serif;
  font-weight: normal;
  color: white;
}

h2{
  margin-top: 0px;
  font-size: 20pt;
  font-family: "Public Sans", sans-serif;
  font-optical-sizing: auto;
  font-weight: 800;
  font-style: normal;
  color: #1F3767;
  padding:3px;
  display: inline-block;
}

li{
  padding: 2pt;
}


small{
  font-size: 10pt;
}

.ref{
  color: #0a65ad;
  /*text-decoration-color: #B4D5EE;*/
  text-decoration: none;
  border-bottom: solid 3px;
  border-color: #B4D5EE;
}

.refb{
  color: #004a87;
  font-weight: bold;
  /*text-decoration-color: #B4D5EE;*/
  text-decoration: none;
  border-bottom: solid 3px;
  /* border-color: #B4D5EE; */
  border-color: #8AD0FF;
}

.header-contact{
  color: #ccc;
  text-decoration: none;
  border-bottom: solid 3px;
  border-color: #666;
}

.learn-more-dark{
  background-color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  color: #0A65AD;
  padding: 10px;
}

.learn-more-light{
  background-color: #0A65AD;
  text-decoration: none;
  color: #fff;
  padding: 10px;
}


@media only screen and (max-width: 700px) {
  #abstract-small-container{
    position: static;
  }

  #abstract2-small-container{
    position: static;
  }

  #abstract-text{
    position: static;
    top:auto;
    left: auto;
    width: auto;
  }

  #abstract2-text{
    position: static;
    top:auto;
    left: auto;
    width: auto;
  }

  .column{
    flex: 100%;
    max-width: 100%;
  }

  .youtube-video {
    aspect-ratio: 16 / 9;
    width: 300px;
  }

}