.gallery {
    -webkit-column-count: 3;
    -moz-column-count: 3;
    column-count: 3;
    -webkit-column-width: 33%;
    -moz-column-width: 33%;
    column-width: 33%;
  }
  
  .gallery .pics {
    -webkit-transition: all 350ms ease;
    transition: all 350ms ease;
  }
  
  .gallery .animation {
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
  }


.btn{
    background-color: #F9C200;
  }
  
  @media (max-width: 450px) {
    .gallery {
      -webkit-column-count: 1;
      -moz-column-count: 1;
      column-count: 1;
      -webkit-column-width: 100%;
      -moz-column-width: 100%;
      column-width: 100%;
    }
  }
  
  @media (max-width: 400px) {
    .btn.filter {
      padding-left: 1.1rem;
      padding-right: 1.1rem;
    }
  }