margin: 0;

  padding: 0;

}

body{

​

background:#EEE;

  overscroll-behavior-y: contain;

  overscroll-behavior-x: contain;

 z-index:-2; 

}

canvas {   

  position:fixed;

  top:0px;

  left:0px;

  z-index:-1; 

}

​

​

#live_btn{

​

  position:fixed;

bottom:8px;

  right:8px;

   font-size:40px;

   z-index:999;

}

​

​

#save_btn{

​

  position:fixed;

bottom:18px;

  left:43%;

   font-size:40px;

   z-index:999;

  display:none;

}

​