html,body,#root,.app-root{height:100%;margin:0;background:transparent}#myVideo{position:fixed;top:0;left:0;min-width:100%;min-height:100%;width:100%;height:100%;object-fit:cover;z-index:0;pointer-events:none}.content{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;text-align:center;gap:20px;color:#f1f1f1;z-index:2;padding:20px;box-sizing:border-box;background:#0009;border-radius:8px}#myBtn{width:200px;font-size:18px;padding:10px;border:none;background:#000;color:#fff;cursor:pointer;border-radius:4px;transition:background .3s,color .3s}#myBtn:hover{background:#ddd;color:#000}