.customoverlay {
    position: relative;
    width:100%;
}

.customoverlay:nth-of-type(n) {
    border: 0;
}

.customoverlay .title {
    display: block;
    text-align: center;
    background: #fff;
    padding: 15px 5px 0;
    font-size: 13px;
    font-weight: bold;
    border-radius: 5px;
}

.customoverlay:after {
    content: '';
    margin-left: -12px;
    left: 50%;
    bottom: -12px;
    width: 22px;
    height: 12px;
    background: url('../img/vertex_white.png')
}

.map-overlay {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: rgba(0,0,0,0.5);
    text-align: center;
    vertical-align: middle;
    line-height: 400px;
    color: white;
}

.map-container {
    max-height: 400px;
    position: relative;
}

@media screen and (max-width : 768px) {
    .map-overlay {
        line-height: 13em;
    }
}