.picture_grid {
    display: -webkit-box; /* OLD - iOS 6-, Safari 3.1-6 */
    display: -moz-box; /* OLD - Firefox 19- (buggy but mostly works) */
    display: -ms-flexbox; /* TWEENER - IE 10 */
    display: -webkit-flex; /* NEW - Chrome */
    display: flex; /* NEW, Spec - Opera 12.1, Firefox 20+ */
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-justify-content: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding-bottom: 30px;
}

.picture {
    display: -webkit-box;      /* OLD - iOS 6-, Safari 3.1-6 */
    display: -moz-box;         /* OLD - Firefox 19- (buggy but mostly works) */
    display: -ms-flexbox;      /* TWEENER - IE 10 */
    display: -webkit-flex;     /* NEW - Chrome */
    display: flex;             /* NEW, Spec - Opera 12.1, Firefox 20+ */
    -webkit-justify-content: center;
    justify-content: center;
    align-items: center;
    margin-top: 40px;
}

.picture_text {
    margin-top: 10px;
}

.picture_container {
    overflow: hidden;
    height: 60vw;
    width: 60vw;
    background-color: #FFFFFF;
    cursor: pointer;

    -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari*/
    -khtml-user-select: none; /* Konqueror */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* Internet Explorer/Edge */
    user-select: none; /* Non-prefixed version, currently
                                  supported by Chrome and Opera */

    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none;
    -webkit-transition: -webkit-box-shadow 0.1s;
    -webkit-transition: -moz-box 0.1s;
    -webkit-transition: box-shadow 0.1s;
    transition: -webkit-box-shadow 0.1s;
    transition: -moz-box 0.1s;
    transition: box-shadow 0.1s;
}

.picture_container:hover {
    -webkit-box-shadow: 5px 5px 15px 0 rgba(0, 0, 0, 0.3);
    -moz-box-shadow: 5px 5px 15px 0 rgba(0, 0, 0, 0.3);
    box-shadow: 5px 5px 15px 0 rgba(0, 0, 0, 0.3);
    -webkit-transition: -webkit-box-shadow 0.1s;
    -webkit-transition: -moz-box 0.1s;
    -webkit-transition: box-shadow 0.1s;
    transition: -webkit-box-shadow 0.1s;
    transition: -moz-box 0.1s;
    transition: box-shadow 0.1s;
}

.picture_container img {
    width: 100%;
    height: 100%;
}

@media screen and (min-width: 800px) {
    .picture_grid {
        width: 80%;
        margin-left: calc(8.5% - 88px);
        -webkit-justify-content: flex-start;
        justify-content: flex-start;
    }

    .picture_container {
        height: 19vw;
        width: 19vw;
    }

    .picture {
        margin-left: 40px;
    }
}