#back-top {
    margin-bottom:1em;
    }

  .thumbnails-container {
    left: 80px;
    margin-top: 70px;
    position: relative;
    top: -26px;
    width: 900px;
    }
 
  .thumbnails-content {
    background-color: white;
    border-radius: 8px;
    background-color: #F5F5F5;
    padding: 8px;
    position: relative;
    }

  .thumbnails-image {
    border: 1px solid lightgray;
    position: absolute;  
    top: 0;  
    bottom: 0;  
    left: 0;  
    right: 0;  
    margin: auto;
    max-height: 100%;
    max-width: 100%;
    }

  .thumbnails-wrapper-1 {
    background-color: #F5F5F5;
    border-radius: 10px;
    border-radius: 10px;
    float: left;
    height: 100px;
    margin: 0 1em 1em 0;
    padding: 12px;
    position: relative;
    width: 100px;
    }

  .thumbnails-wrapper-2 {
    background-color: #F5F5F5;
    height: 100%;
    position: relative;
    width: 100%;
    }