.block-grid-wrapper {
    position: relative;
}

h4.block-grid-title, h4.block-grid-title a {
    font-size: 18px;
    bottom: 5%;
    position: absolute;
    background: rgba(0, 0, 0, 0.85);
    color: #F3F3F3;
    padding: 0.3em 0.75em 0.3em 0.4em;
    line-height: 1.2;
    max-width: 100%;
    display: inline-block;
}