body{/*ソファー柄の背景(水色)*/
background-size:100px 100px;
background-position:50px 50px,0 0,0 0,0 0;
background-color:#dff;
background-image:
radial-gradient(#fff 1px,#dff 5px,#cff 8px,#bee 8px,rgba(221,255,255,0) 13px),
radial-gradient(#fff 1px,#dff 5px,#cff 8px,#bee 8px,rgba(221,255,255,0) 13px),
linear-gradient(45deg,rgba(0,200,200,0.1),rgba(221,255,255,0) 10%,rgba(221,255,255,0) 40%,rgba(255,255,255,0.5) 50%,rgba(0,200,200,0.1) 50%,rgba(221,255,255,0) 60%,rgba(221,255,255,0) 90%,rgba(255,255,255,0.5)),
linear-gradient(-45deg,rgba(0,200,200,0.1),rgba(221,255,255,0) 10%,rgba(221,255,255,0) 40%,rgba(255,255,255,0.5) 50%,rgba(0,200,200,0.1) 50%,rgba(221,255,255,0) 60%,rgba(221,255,255,0) 90%,rgba(255,255,255,0.5));
}