#gallery_container {  
    position: relative;
    margin: 1em 0;
    -webkit-column-count: 3; 
    -moz-column-count: 3;
    column-count: 3;
    -webkit-column-gap: 1em;
    -moz-column-gap: 1em;
    column-gap: 1em;
    -webkit-column-width: 33.33%;
    -moz-column-width: 33.33%;
    column-width: 33.33%;
}
.tile { 
    -webkit-transform: scale(0);
    transform: scale(0);
    -webkit-transition: all 0.5s ease;
    transition: all 0.5s ease;
}

.tile span {
    position: absolute;    
    bottom: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #333;
    color: #fff;
    padding: 1em;
    margin: auto;
    width: 100%;
    opacity: 0.5;
    vertical-align: baseline;
}

.scaleit {
    transform: scale(1);
    display: block;
}


.tile img {
    max-width: 100%;
    width: 100%;
    height: auto;
    margin-bottom: 1rem;
    opacity: 0.7;
    -webkit-transition: all 0.5s ease;
    transition: all 0.5s ease;
}
.tile img:hover {
    opacity: 1;
}
.btns {
    text-align: center;
}
.btn {
    font-size: 1em;
    padding: 1em 1em;
    text-decoration: none;
    cursor: pointer;    
    margin: 0.05em;
    border: 1px solid;
    vertical-align: middle;
    color: #333;
    background-color: rgba(0, 0, 0, 0);
}

.btn:hover {
    background-color: #333;
    color: #fff;
}

@media all and (max-width:1000px){
    #gallery_container {  
        position: relative;
        margin: 1em 0;
        -webkit-column-count: 2; 
        -moz-column-count: 2;
        column-count: 2;
        -webkit-column-gap: 1em;
        -moz-column-gap: 1em;
        column-gap: 1em;
        -webkit-column-width: 50%;
        -moz-column-width: 50%;
        column-width: 50%;
    }
  
}


@media all and (max-width:760px){
    #gallery_container {  
        position: relative;
        margin: 1em 0;
        -webkit-column-count: 1; 
        -moz-column-count: 1;
        column-count: 1;
        -webkit-column-gap: 1em;
        -moz-column-gap: 1em;
        column-gap: 1em;
        -webkit-column-width: 100%;
        -moz-column-width: 100%;
        column-width: 100%;
    }
  
}