* { 
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
      height: 100%;
  }


body {
    min-height: 100%;
    width: 100%;
    background-image: url(../thumbnails/arnold.jpg);
    background-size: cover;
    background-color: black;
    background-repeat: no-repeat;
}

@media only screen and (min-width: 481px) and (max-width: 768px) {
    body {
      width: 100%;
      
    }
   }