/* parent container for videos */
.videos {
    margin: 20px auto;
    max-width: 700px;
}
/* container for each video */
.video-wrap {
    position: relative;
    max-width: 700px;
    width: 100%;
    margin-bottom: 10px;
}

    .video-wrap .placeholder {
        max-width: 700px;
        width: 100%;
    }

    .video-wrap .play-btn {
        position: absolute;
        max-width: 700px;
        width: 100px;
        height: 100px;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
    }

        .video-wrap .play-btn svg {
            transition: all .2s ease;
            fill: #aaa;
        }

        .video-wrap .play-btn:hover svg,
        .video-wrap .play-btn:focus svg {
            cursor: pointer;
            fill: #fff;
        }