.gallery-card {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0,0,0,.125);
    border-radius: .25rem;
    min-height: 70px;
    margin-bottom: 12px;
    font-size: 0.85rem
}

.gallery-card img {
    margin-top: -16px;
}

.block-check {
    display: block;
    position: relative;
    cursor: pointer;
    min-height: 100%;
    font-size: 1.1em;
    font-weight: bold;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    padding-top: 24px;
    text-align: center;
    vertical-align: middle;
}

    .block-check input {
        position: absolute;
        opacity: 0;
        cursor: pointer;
    }

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 24px;
    line-height: 25px;
    width: 24px;
    background-color: #eee;
    cursor: pointer;
    text-align: center;
}

/* On mouse-over, add a grey background color */
.block-check:hover input ~ .checkmark {
    background-color: #ccc;
}

/* When the checkbox is checked, add a green background */
.block-check input:checked ~ .checkmark {
    background-color: #28A745;
}


/* Create the checkmark/indicator (hidden when not checked) */
.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}


/* Show the checkmark when checked */
.block-check input:checked ~ .checkmark:after {
    display: block;
}

/* Style the checkmark/indicator */
.block-check .checkmark:after {
    left: 9px;
    top: 5px;
    width: 8px;
    height: 12px;
    border: solid white;
    border-width: 0 3px 3px 0;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}