body{/*ギザギザ(4色/縦)の背景*/
background-color:#a68;
background-size:20px 20px;
background-position:0 15px,0 0,0 0,0 10px,0 10px;
background-image:
linear-gradient(-45deg,#e6c 12.5%,transparent 12.5%),
linear-gradient(-135deg,#fff 12.5%,#e6c 12.5%,#e6c 25%,#b07 25%,#b07 37.5%,transparent 37.5%),
linear-gradient(-45deg,#fff 12.5%,#e6c 12.5%,#e6c 25%,#b07 25%,#b07 37.5%,transparent 37.5%),
linear-gradient(135deg,#e6c 12.5%,#fff 12.5%,#fff 25%,transparent 25%),
linear-gradient(45deg,#e6c 12.5%,#fff 12.5%,#fff 25%,transparent 25%);
}