#gallery{
    -webkit-column-count:4;
    -moz-column-count:4;
    column-count:4;
    
    -webkit-column-gap:20px;
    -moz-column-gap:20px;
    column-gap:20px;
  }
  @media (max-width:1200px){
    #gallery{
    -webkit-column-count:3;
    -moz-column-count:3;
    column-count:3;
      
    -webkit-column-gap:20px;
    -moz-column-gap:20px;
    column-gap:20px;
  }
  }
  @media (max-width:800px){
    #gallery{
    -webkit-column-count:2;
    -moz-column-count:2;
    column-count:2;
      
    -webkit-column-gap:20px;
    -moz-column-gap:20px;
    column-gap:20px;
  }
  }
  @media (max-width:600px){
    #gallery{
    -webkit-column-count:1;
    -moz-column-count:1;
    column-count:1;
  }  
  }
  #gallery img,#gallery video {
    width:100%;
    height:auto;
    margin: 4% auto;
    box-shadow:-3px 5px 15px #000;
    cursor: pointer;
    -webkit-transition: all 0.2s;
    transition: all 0.2s;
  }
  .modal-img,.model-vid{
    width:100%;
    height:auto;
  }
  .modal-body{
    padding:0px;
  }