#portfolio_main {  
    margin: 1rem 0;
    -webkit-column-count: 3; 
    -moz-column-count: 3;
    column-count: 3;
    -webkit-column-gap: 0.2rem;
    -moz-column-gap: 0.2rem;
    column-gap: 0.2rem;
    -webkit-column-width: 33.33333333333333%;
    -moz-column-width: 33.33333333333333%;
    column-width: 33.33333333333333%;
}
.tile { 
display: none;
}
.scale-anm {
    margin: 0 0 0.05rem;
    width: 100%; 
    border: none!important;
}
.tile img {
    max-width: 100%; 
    height: auto;
    display: block; 
    width: 100%;
}
.btn {
    font-family: Lato;
    font-size: 1rem;
    font-weight: normal;
    text-decoration: none;
    cursor: pointer;
    display: inline-block;
    line-height: normal;
    padding: .5rem 1rem;
    margin: 0; 
    height: auto;
    border: 0.5px solid #ccc; 
    vertical-align: middle;
    -webkit-appearance: none;
    color: #555;
    background-color: rgba(0, 0, 0, 0);
}

.card-header{
    background: black!important;
}

.card-header .btn{
    /* background: black!important; */
    color: white!important;
    width: 100%!important;
    align-content: flex-start;
}
.cb{
    border:none!important;
}

a.cb{
    text-align: left!important;
}