星形 – css Star –

「星形」の描画。borderを使った例です。

html

<div class="star"></div>

css

.star {
	position: relative;
	width: 0;
	height: 0;
	border-right: 50px solid transparent;
	border-left: 50px solid transparent;
	border-bottom: 35px solid #39a9d6;
	-webkit-transform: rotate(35deg);
	transform: rotate(35deg);
}
.star::before {
	position: absolute;
	top: -25px;
	left: -30px;
	width: 0;
	height: 0;
	content: "";
	border-bottom: 40px solid #39a9d6;
	border-left: 15px solid transparent;
	border-right: 15px solid transparent;
	-webkit-transform: rotate(-35deg);
	transform: rotate(-35deg);
}
.star::after {
	position: absolute;
	top: 0;
	left: -50px;
	width: 0;
	height: 0;
	content: ""; 
	border-right: 50px solid transparent;
	border-left: 50px solid transparent;
	border-bottom: 35px solid #39a9d6;
	-webkit-transform: rotate(-70deg);
	transform: rotate(-70deg);
}