@import url(https://fonts.googleapis.com/css?family=robotoslab);
html, body {
  height: 100%;
}

html {
  background: url("../img/bleta.jpg") no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}