body {
    background: black;
    color: white;
    text-align: center;
    overflow: hidden;
}

.ооонихуя {
    position: absolute;
    pointer-events: none;
    will-change: left, top, transform;
}

a {
    color: white;
    text-decoration: none;
    font-size: 40px;
}

a:hover {
    text-decoration: underline;
}

main {
    position: relative;
    z-index: 999;
    text-align: center;
    pointer-events: auto;
    width: 500px;
    height: auto;
    margin-left: auto;
    margin-right: auto;
    margin-top: 100px;
    opacity: 0.995;
}
.qot {
  display: block;
  margin: 0 auto;
  border: 0;    
  box-sizing: border-box;
  text-align: center;
  opacity: 0.995; /* иначе Babum */
}

@media (max-height: 500px) {
  main {
    margin-top: 0;
  }
}