@charset "UTF-8";

html, body {
  height: 100%;
  background: black;
  overflow: hidden;
}

body { font-family:'Roboto';}

.container {
  width: 100vw;
  height: 100vh;
  position: relative;
}
@media screen and (min-width: 1921px) {

.container {
  top: 50%;
  left: 50%;
  margin-top: -490px;
  margin-left: -960px;
}
}

.section {
  width: 100vw;
  height: 100vw;
  font-size: 200px;
  text-align: center;
  line-height: 100vh;
  color: white;
}

.section:nth-child(1) { background: #DA4453; }

.section:nth-child(2) { background: #3BB0D6; }

.section:nth-child(3) { background: #8BC163; }

.section:nth-child(4) { background: #D870A9; }

.section.footer {
  height: 300px;
  background: red;
}

.btn {
  position: fixed;
  top: 10px;
  left: 0;
}

.btn li {
  width: 200px;
  height: 20px;
  margin: 10px;
  background: black;
  border: 1px solid white;
  color: white;
  text-align: center;
  line-height: 20px;
  font-size: 12px;
  cursor: pointer;
}

.btn li.move_to { }

.btn li.move_to input {
  width: 70px;
  height: 20px;
  padding: 1px 8px;
  box-sizing: border-box;
  float: left;
}

.btn li.move_to button {
  width: 130px;
  height: 20px;
  float: left;
  font-size: 12px;
}