.headings(@color, @shadow: 50%) {
  color: @color;
  text-shadow: 0px 1px 1px lighten(@color, @shadow);
}

@slider-top: -40px;
@azblue: #003366;

.custom-control-hover-label {
  background-color: white;
  font: 11px "Helvetica Neue", Arial, Helvetica, sans-serif;
  color: @azblue;
  font-weight: bold;
  padding: 3px 5px;
  border: 5px solid lighten(@azblue, 5%);
  border-radius: 5px;
}

#time-container {
  position: relative;
  top: @slider-top;
  left: 20px;
  a { 
    text-align: center;
    text-decoration: none;
    outline: none;
  }
}

div.year-indicator {
  .headings(@azblue, 70%);
  position: relative;
  left: -7px;
  top: -20px;
  font-size: 16px;
  font-weight: bold;
}

#popup-content {
  h3 { border-bottom: 2px solid black; }
  #media-container {
    padding-top: 10px;
    font-weight: bold;
    text-align: center;
    #media-content {
      padding-top: 10px; 
      img { height: 200px; }   
    }
  }
}

.headings(@color, @shadow: 50%) {
  color: @color;
  text-shadow: 0px 1px 1px lighten(@color, @shadow);
}

@slider-top: -40px;
@azblue: #003366;

.custom-control-hover-label {
  background-color: white;
  font: 11px "Helvetica Neue", Arial, Helvetica, sans-serif;
  color: @azblue;
  font-weight: bold;
  padding: 3px 5px;
  border: 5px solid lighten(@azblue, 5%);
  border-radius: 5px;
}

#time-container {
  position: relative;
  top: @slider-top;
  left: 20px;
  a { 
    text-align: center;
    text-decoration: none;
    outline: none;
  }
}

div.year-indicator {
  .headings(@azblue, 70%);
  position: relative;
  left: -7px;
  top: -20px;
  font-size: 16px;
  font-weight: bold;
}

#popup-content {
  h3 { border-bottom: 2px solid black; }
  #media-container {
    padding-top: 10px;
    font-weight: bold;
    text-align: center;
    #media-content {
      padding-top: 10px; 
      img {
      	width: 301px; 
      	height: 200px; 
      }   
    }
  }
}

Change the size of image in the popup
Change the size of image in the popup
