* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
body {
  width: 100%;
  height: 100vh;
  background: #88836f;
}
.myVideo {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  min-width: 100%;
  min-height: 100%;
  z-index: 0;
}
main {
  margin: 0 auto;
  width: 100%;
  max-width: 800px;
  text-align: center;
  padding-bottom: 200px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
main > div {
  width: 100%;
}
.button {
  width: 300px;
  position: relative;
  text-align: center;
  margin: 0 auto;
  padding-top: 100px;
}
.btn {
  width: 240px;
  display: inline-block;
  z-index: 2;
  position: relative;
}
.content {
  z-index: 2;
  position: relative;
}
.content img {
  width: 100%;
}
.desk {
  display: block;
}
.mobile {
  display: none;
}
.circle {
  position: absolute;
  left: 2%;
  top: -53px;
  transform: translate(-50%, -50%);
  -webkit-animation: rotating 5s linear infinite;
  -moz-animation: rotating 5s linear infinite;
  -ms-animation: rotating 5s linear infinite;
  -o-animation: rotating 5s linear infinite;
  animation: rotating 5s linear infinite;
  z-index: 1;
}

@-webkit-keyframes rotating /* Safari and Chrome */ {
  from {
    -webkit-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  to {
    -webkit-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@keyframes rotating {
  from {
    -ms-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  to {
    -ms-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@media screen and (max-width: 768px) {
  .desk {
    display: none;
  }
  .mobile {
    display: block;
  }
  .myVideo {
    height: 100%;
  }
  .content img.title1 {
    width: 80%;
    margin: 0 auto;
  }
  .content {
    padding: 0 0.5rem;
  }
}