div .gradient {
  background-color: #b2b2b2;
  background-color: rgba(0, 0, 0, .3);
}
body {
background: #20576B;
background: -webkit-linear-gradient(top left, #20576B, #4DEEE8);
background: -moz-linear-gradient(top left, #20576B, #4DEEE8);
background: linear-gradient(to bottom right, #20576B, #4DEEE8);
}