html {
  width: 100%;
  height: 100%;

  background: url(../assets/page-bg.jpg) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

body {
  height: inherit;
  width: inherit;
  margin: 0px;
  padding: 0px;
  display: flex;
  justify-content: center;
  align-items: center;
}