.dtn-imagebox {
    position: relative;
    z-index: 1;
    margin-top: 30px;
    margin-bottom: 50px;
}

.dtn-imagebox img {
    display: block;
    width: 100%;
}

.dtn-imagebox .content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 10;
    padding: 25px 15px;
}

.dtn-imagebox .content h3 {
    font-size: 26px;
    line-height: 36px;
    color: white;
    margin: 0;
}

.dtn-imagebox .content .subtitle-cont {
    color: white;
}

.dtn-imagebox .content .subtitle-cont span {
    line-height: 22px;
}

.dtn-imagebox .content .subtitle-cont span.link {
    color: white;
    text-transform: uppercase;
}

.dtn-imagebox .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
	background-color: rgba(0,0,0,0);
    background: linear-gradient(to bottom, rgba(0,0,0,0) 50%, rgba(0,0,0,0.5));
    z-index: 5;
    opacity: 1;
    transition: background-color 0.3s;
}

.dtn-imagebox:hover .overlay {
	background-color: rgba(0,0,0,0.4);
}

@media (max-width: 641px) {
    .dtn-imagebox {
        margin-bottom: 20px;
    }
    .dtn-imagebox .content h3 {
        font-size: 18px;
        line-height: 20px;
    }
    .dtn-imagebox .content .subtitle-cont span {
        line-height: 16px;
        font-size: 14px;
    }
    .dtn-imagebox .content .subtitle-cont a {
        font-size: 14px;
    }
}