xiaxianlin

.btn{
	position: relative;
	width: 150px;
	height: 30px;
	text-align: center;
	line-height: 30px;
}

xiaxianlin

div{
	width: 20em;
	height: 10em;
	margin: 2em auto;
	padding: 1em;
	border: 1em solid transparent;
	background: linear-gradient(white, white) padding-box,
				repeating-linear-gradient(-45deg, red 0, red 12.5%, transparent 0, transparent 25%, #58a 0, #58a 37.5%, transparent 0, transparent 50%) 0 / 3em 3em;
}

xiaxianlin

/**
 * CSS Secret
 */
.est{
	background: yellow;
	width: 100px;
	height: 100px;
}