#video_element { width: 100%; padding-bottom: 56.25%; position: relative; height: 0; overflow: hidden; }
#content button.vjs-big-play-button {
    font-size: 6em;
    line-height: 1.5em;
    height: 2em !important;
    width: 2em !important;
    display: block;
    position: absolute;
    top: calc(50% - 1em);
    left: calc(50% - 1em);
    padding: 0;
    margin: 0;
    cursor: pointer;
    opacity: 1;
    color: #fff;
    border: 1px solid #fff;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 100%;
}
#content button.vjs-big-play-button span:before { margin-top: 14px; display: block; }
#content .vjs-has-started .vjs-big-play-button,.vjs-using-native-controls .vjs-big-play-button{display:none}

#content .vjs-control-bar button {
    background: none;
    border: none;
    border-radius: 0;
    position: relative;
    text-align: center;
    margin: 0;
    padding: 0;
    height: 100%;
    width: 4em !important;
    color: #fff;
    font-size: inherit;
}