一、三角形

---

    #wrap div{

	margin: 0 auto;

	}

	.triangle_three

	{

	  height:0px; width:0px;

	  border-bottom:50px solid #ccc;

	  border-left:100px solid transparent;

	  border-right:100px solid transparent;

	}

	.triangle-four{

	height:20px; width:20px;

	border-top: 50px solid blue;

	border-bottom: 50px solid black;

	border-left: 50px solid green;

	border-right:50px solid yellow;

	}

   <div id="wrap">

		<div class="triangle_three" >

		</div>

		<div class="triangle-four">

		</div>

	</div>

房子图

二、闪耀太阳系