@media only screen and (max-width: 991px) {
  * {
    margin: 0;
    padding: 0;
  }

  .wrap {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
  }

  .bg {
    width: 100%;
    content: url("../image/mobile/background.jpg")
  }

  .btns {
    position: absolute;
    width: 80%;
    top: 87%;
    left: 10%;

  }

  .btn1 img {
    width: 100%;
  }
}