.section {
  min-height: 100vh;
  text-align: center;
  width: 100%;
  display: table;
  background-size: cover;
}
.wrap-block {
  display: table-cell;
  vertical-align: middle;
  color: #fff;
}
* {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}