html,
body {
    height: 100%;
    margin: 0;
    overflow: hidden;
    background-color: lightgreey;
}

body{
  font-family: Arial;
  background: linear-gradient(to right, #ada996, #f2f2f2, #dbdbdb, #eaeaea);
  color: white;
  background-repeat: no-repeat;
  background-attachment: fixed;
 }

.container{
  width: 80%;
  height: 100%;
  margin: 0 auto;
}