@media screen and (min-width: 320px) and (max-width: 1020px) {
  .ok {
    height: 130vh;
  }
  .start {
    width: 100px;
    font-size: 65px;
    right: 10px;
  }

  .back {
    width: 80px;
    font-size: 65px;
    right: 120px;
  }

  .glbsas {
    font-size: 75px;
  }

  .glbsas li a:hover {
    transform: none;
  }

  .glbsas a::before {
    width: 100%;
  }
}

@media screen and (min-width: 100px) and (max-width: 600px) {
  .ok {
    height: 110vh;
  }

  h4 {
    transform: none;
    text-shadow: 0px 0px 0px #000;
  }

  .start {
    width: 220px;
    font-size: 25px;
    right: 15px;
    height: 60px;
    border-radius: 30px;
    top: 5px;
    text-shadow: 0px 0px 0px #000;
  }

  .back {
    width: 60px;
    font-size: 30px;
    right: 90px;
    left: 10px;
    top: 5px;
    height: 60px;
    border-radius: 50%;
  }

  .back h4 {
    display: none;
  }

  .back i {
    display: block;
  }

  .glbsas li {
    margin-top: 80px;
  }

  .glbsas li a:hover {
    transform: none;
  }

  .glbsas a::before {
    width: 100%;
  }
}

@media screen and (min-width: 350px) and (max-width: 550px) {
  .glbsas {
    font-size: 80px;
  }
}

@media screen and (min-width: 100px) and (max-width: 449px) {
  .glbsas {
    font-size: 60px;
  }
}