台形 – css Trapezoid –

「台形」の描画。borderを使った例とbackgroundを使った例です。「Trapezoid」って知りませんでした･･･

borderを使った例（上）

html

<div class="trapezoid_up"></div>

css

.trapezoid_up {
        box-sizing: content-box;
	width: 50px;
	height: 0;
	border-left: 50px solid transparent;
	border-right: 50px solid transparent;
	border-bottom: 100px solid #39a9d6;
}

borderを使った例（右）

html

<div class="trapezoid_right"></div>

css

.trapezoid_right {
        box-sizing: content-box;
	width: 0;
	height: 50px;
	border-left: 100px solid #39a9d6;
	border-top: 50px solid transparent;
	border-bottom: 50px solid transparent;
}

borderを使った例（下）

html

<div class="trapezoid_down"></div>

css

.trapezoid_down {
        box-sizing: content-box;
	width: 50px;
	height: 0;
	border-left: 50px solid transparent;
	border-right: 50px solid transparent;
	border-top: 100px solid #39a9d6;
}

borderを使った例（左）

html

<div class="trapezoid_left"></div>

css

.trapezoid_left {
        box-sizing: content-box;
	width: 0;
	height: 50px;
	border-right: 100px solid #39a9d6;
	border-top: 50px solid transparent;
	border-bottom: 50px solid transparent;
}

backgroundを使った例（上）

html

<div class="trapezoid_g_up"></div>

css

.trapezoid_g_up {
	overflow: hidden;
	background: transparent;
}
.trapezoid_g_up:before {
	display: block;
	width: 200px;
	height: 100px;
	content: "";
	-webkit-transform-origin: 0 100%;
	transform-origin: 0 100%;
	-webkit-transform: skewX(-25deg);
	transform: skewX(-25deg);
	background-image: linear-gradient(
		45deg,
		#2d424f 0%,
		#39a9d6 50%,
		transparent 50%,
		transparent 100%
	);
}

backgroundを使った例（右）

html

<div class="trapezoid_g_right"></div>

css

.trapezoid_g_right {
	overflow: hidden;
	background: transparent;
}
.trapezoid_g_right:before {
	display: block;
	width: 100px;
	height: 200px;
	content: "";
	-webkit-transform-origin: 0 0;
	transform-origin: 0 100%;
	-webkit-transform: skewY(-25deg);
	transform: skewY(-25deg);
	background-image: linear-gradient(
		45deg,
		#2d424f 0%,
		#39a9d6 50%,
		transparent 50%,
		transparent 100%
	);
}

backgroundを使った例（下）

html

<div class="trapezoid_g_down"></div>

css

.trapezoid_g_down {
	overflow: hidden;
	background: transparent;
}
.trapezoid_g_down:before {
	display: block;
	width: 200px;
	height: 100px;
	content: "";
	-webkit-transform-origin: 0 0;
	transform-origin: 0 0;
	-webkit-transform: skewX(25deg);
	transform: skewX(25deg);
	background-image: linear-gradient(
		135deg,
		#2d424f 0%,
		#39a9d6 50%,
		transparent 50%,
		transparent 100%
	);
}

backgroundを使った例（左）

html

<div class="trapezoid_g_left"></div>

css

.trapezoid_g_left {
	overflow: hidden;
	background: transparent;
}
.trapezoid_g_left:before {
	display: block;
	width: 100px;
	height: 200px;
	content: "";
	-webkit-transform-origin: 100% 0;
	transform-origin: 100% 0;
	-webkit-transform: skewY(25deg);
	transform: skewY(25deg);
	background-image: linear-gradient(
		-45deg,
		#2d424f 0%,
		#39a9d6 50%,
		transparent 50%,
		transparent 100%
	);
}