@media (min-width: 1200px) {
  .pattern1 { background: url(../pattern/pattern1.jpg) no-repeat center center fixed; 
  .pattern2 { background-image: url(../pattern/pattern2.png);}
  .pattern3 { background-image: url(../pattern/pattern3.png);}
  .pattern4 { background-image: url(../pattern/pattern4.png);}
  .pattern5 { background-image: url(../pattern/pattern5.png);}
  .pattern6 { background-image: url(../pattern/pattern6.jpg);}
  .pattern7 { background-image: url(../pattern/pattern7.jpg);}
  .pattern8 { background-image: url(../pattern/pattern8.jpg);}
  .pattern9 { background-image: url(../pattern/pattern9.jpg);}
  .pattern10 { background-image: url(../pattern/pattern10.jpg);}
  body.pattern1, body.pattern6, body.pattern7,
  body.pattern8, body.pattern9, body.pattern10{
  background-attachment:fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  }
}