CSS Ribbon

dabblet.css

/**
 * CSS Ribbon
 */

#box {
	position: relative;
	width: 300px;
	height: 75px;
}

#box:hover {
	width: 500px;
	transition: all 1s;
}

#front {
	position: absolute;
	background: red;
	height: 100%;
	width: 100%;
	z-index: 2;
	
	color: white;
	font-family: arial;
	font-weight: bold;
	font-size: 30px;
	text-align: center;
	line-height: 75px;
}


#back {
	height: 100%;
	width: 75px;
	background: yellow;
	position: absolute;
	z-index: 1;
	right: -50px;
	top: 25px;
}

#back #cut {
	height: 0px;
	width: 0px;
	position: absolute;
	z-index: 3;
	border: 38px solid white;
	border-color: transparent white transparent transparent;
}


#edge {
	width: 0px;
	height: 0px;
	position: absolute;
	border-color: blue transparent transparent transparent;
	border-style: solid;
	border-width: 25px;
	border-left-width: 0px;
	z-index: 3;
	top: 100%;
	right: 0px;
}

dabblet.html

<div id="box">
	<div id="front">
		Hover me
	</div>
	<div id="edge"></div>
	<div id="back">
		<div id="cut"></div>
	</div>
</div>

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"css"}