.hidden { display: none; }

#filter {
    text-align: center;
    background-color: #fff;
    padding: 15px;
    margin-bottom: 25px;
}

#filter button {
    border: 0;
    background-color: #494949;
    font-family: 'Open Sans', sans-serif;
    font-size: 14px;
    color: #fff;
    cursor: pointer;
    padding: 10px 25px;
    border-radius:  20px;
    margin-right: 10px;
}

#filter button:hover {
    background-color: #595959;
}

#filter button.active { 
    background-color: #6599FF;
    color: #fff;
    
    
}

#filter button:focus { outline: 0; }


#filter button:nth-child(3n) {
    margin-top: 20px;
}

#posts {
    max-width: 1200px;
    margin: 0 auto;    
}

#posts .post {
    overflow: hidden;
    text-align: center;
    cursor: pointer;
    position: relative;
    z-index: 1;
    display: inline-block;
    background: #333;
    max-width: 282px;
    max-height: 230px;
    margin-right: 3px;
    margin-bottom: 3px;
}

#posts .post img {
    position: relative;
    display: block;
    opacity: 1;
    -webkit-transition: opacity 0.35s, -webkit-transform 0.35s;
    transition: opacity 0.35s, transform 0.35s;
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    min-height: 100%;
}

#posts .post:hover img {
    opacity: 0.2;
    -webkit-transform: scale(1.3);
    transform: scale(1.3);
}

#posts .post .post-content {
    margin: 0 auto;
    text-align: center;
    color: #fff;
    text-transform: uppercase;
    font-size: 1.25em;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

#posts .post .post-content::before,
#posts .post .post-content::after { pointer-events: none; }

#posts .post .post-content
 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#posts .post span {
    word-spacing: -0.15em;
    font-weight: 300;   
}


#posts .post p { margin: 0; }

#posts .post p {
    letter-spacing: 1px;
    font-size: 68.5%;
    padding:40px 20px 20px 20px;
    text-align: center;
    color: #fff;
    opacity: 0;
    -webkit-transition: opacity 0.35s, -webkit-transform 0.35s;
    transition: opacity 0.35s, transform 0.35s;
    -webkit-transform: translate3d(0, -40px, 0);
    transform: translate3d(0, -40px, 0);
}

#posts .post:hover p {
    opacity: 1;
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
}


.btn-folio {
    margin-right: 15px;
    padding: 13px 17px;
    -webkit-border-radius: 50%;
    border-radius: 50%;
    background-color: transparent;
    border: 1px solid #fff;
    font-size: 12px;
    color: #fff;
    opacity: 0;    
    transition: opacity 0.35s, transform 0.35s;
    -webkit-transform: translate3d(0, 100px, 0);
    transform: translate3d(0, 100px, 0);
    
}

.post:hover .btn-folio {
    opacity: 1;
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
    
}

.btn-folio:hover {
    color: #1b9ad8;
    background-color: #fff;   
}