VIDEO PLAY BUTTON MOBILE

My video play button isn't centering on mobile view. Does anyone have any code to center it or to hide it on mobile?

Here's the page: https://www.nomeansnoworldwide.org/home-kd

And here is the current code:.sqs-video-wrapper .sqs-video-overlay .sqs-video-icon { background-color: #3a2b82 !important; background-image: url("http://i.imgur.com/3ZONco6.png"); background-position: center center; background-repeat: no-repeat;
cursor: pointer; background-size: cover; text-align:center; margin:auto; padding:0;
position: absolute; height: 46px; left: 43%; opacity: 1.0; top: 73%; width: 162px; }