.imagen:hover {
    filter: opacity(.5);
    transition:all .5s ease-in-out;}
div.gallery {
    /* [disabled]border-color: #ccc; */
    /* [disabled]border-style: solid; */
    /* [disabled]border-width: 1px; */
    height: 25rem;
    position: relative;
}

div.gallery:hover {
}

div.gallery img {
    width: 100%;
    height: auto;
}

div.desc {
    /* [disabled]padding-top: 5px; */
    padding-right: 15px;
    padding-left: 15px;
    padding-bottom: 15px;
    text-align: left;
    font-size: 0.92rem;
    line-height: 1rem;
    font-weight: 600;
    color: hsla(0,0%,36%,1.00);
    clear: both;
}
div.desc1 {
    padding-top: 2px;
    padding-right: 2px;
    padding-left: 15px;
    padding-bottom: 4px;
    text-align: left;
    font-size: 1.2rem;
    color: hsla(0,1%,48%,1.00);
    font-weight: 600;
    clear: both;
}

* {
    box-sizing: border-box;
}
.gallery .texto_a {
    padding-left: 15px;
    padding-top: 3px;
    font-size: 1.1rem;
    text-align: left;
    font-weight: 700;
    padding-bottom: 3px;
}
.wraphistory {
    width: 70%;
    margin-left: auto;
    margin-right: auto;
    max-width: 1200px;
    margin-top: 4rem;
}

.responsive {
    padding-top: 0;
    padding-right: 6px;
    padding-left: 6px;
    float: left;
    width: 24.99999%;
    margin-bottom: 2rem;
}

@media only screen and (max-width: 1200px) {
    .responsive {
        width: 49.99999%;
        margin: 6px 0;
    }
    div.gallery {
    height: 31rem;
}
}
    @media only screen and (max-width: 768px) {
    .responsive {
        width: 49.99999%;
        margin: 6px 0;
    }
    div.gallery {
    height: 25rem;
}
}

@media only screen and (max-width: 576px) {
    .responsive {
        width: 100%;
    }
        div.gallery {
    height: 30rem;
}
}

.clearfix:after {
    content: "";
    display: table;
    clear: both;
}