body{/*籠目模様*/
background-size:22px 38px;
background-image:
linear-gradient(0deg,transparent 24%,#bd8 24%,#bd8 26%,transparent 26%,transparent 74%,#bd8 74%,#bd8 76%,transparent 76%),
linear-gradient(120deg,transparent 49%,#bd8 49%,#bd8 51%,transparent 51%),
linear-gradient(-120deg,#eec 49%,#bd8 49%,#bd8 51%,#eec 51%);
}