.vrshow_comment {
    position: absolute;
    bottom: 10%;
    left: 50%;
    margin-left: -200px;
    width: 400px;
    min-height: 100px;
    background-color: rgba(51, 51, 51, 0.8);
    z-index: 4300;
    color: #fff;
    border-radius: 5px;
    display: none;
}

@media screen and (max-width: 767px) {
    .vrshow_comment { width: 250px; margin-left: -125px; }
}
.vrshow_comment h4{
    font-size: 12px;
    margin: 8px 0 5px 10px;
}