body {
  background-image: linear-gradient(6deg, #214, #000);
  background-size: 100% 100%;overflow: hidden
}
canvas { display: block; }
@media screen and (min-width: 1025px) and (max-width: 1920px){
.login{margin:0px auto; position: fixed; width:460px; height: auto; overflow: hidden; left: 50%; margin-left: -230px; top: 200px; background:url(../images/login-bg.png);}
}

@media screen and (min-width: 320px) and (max-width: 1024px){
.login{margin:0px auto; position: fixed; width:80%; height: auto; overflow: hidden; left: 10%;top: 80px; background:url(../images/login-bg.png);}
}