.filtro {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 2.5em;
}

.filter,
.sort {
    border: solid 2px rgba(0, 0, 0, 0.05);
    color: rgba(0, 0, 0, 0.5);
    margin: 2px;
    transition: all .6s ease;
    padding: .5em 1em;
}

.filter:hover:not(.active),
.sort:hover:not(.active) {
    background-color: rgba(0, 0, 0, 0.15);
    cursor: pointer;
}

.active {
    border: solid 2px rgba(0, 70, 124, 0.35);
    color: rgba(0, 70, 124, 0.75);
}

#contenido {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 0 -.5em;
}

img {
    max-width: 100%;
    height: auto;
}

figure {
    position: relative;
    overflow: hidden;
}

figure img {
    display: block;
}

figcaption {
    background-color: rgba(0, 0, 0, .5);
    color: white;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    align-items: center;
    line-height: 1.2em;
    text-align: center;
    padding: .25em;
    opacity: 0;
    transition: all .3s ease;
    font-size: .75em;
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
}

figure:hover figcaption {
    opacity: 1;
}

figcaption a {
    color: rgba(255,255,255,.5);
    display: block;
    flex: 0 0 100%;
    font-size: 2em;
    padding-bottom: 1rem
}
figcaption a:hover {
    color: rgba(255,255,255,1);
}

.bloque,
.iconos {
    display: block;
    margin-bottom: .35em;
}

.iconos i { margin: 0 .25em; }

#contenido .mix {
/*    border: solid 1px rgba(0,0,0,.02);*/
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.15);
    display: none;
    margin: .5em;
    width: calc( 100% - 1em );
}

@media(min-width:320px) {
    #contenido .mix {
        width: calc( 50% - 1em );
    }
}

@media(min-width:480px) {
    #contenido .mix {
        width: calc( 33.33% - 1em );
    }
}

@media(min-width:800px) {
    #contenido .mix {
        width: calc( 25% - 1em );
    }
}

@media(min-width:960px) {
    #contenido .mix {
        width: calc( 20% - 1em );
    }
}

@media(min-width:1200px) {
    #contenido .mix {
        width: calc( 16.66% - 1em );
    }
}