CSS Triangle

We can make a triangle with css, such as the following demo.

CSS code:

.arrow-up { width: 0; height: 0; border-left: 5px solid transparent; border-right: 5px solid transparent; border-bottom: 5px solid orange;}.arrow-down { width: 0; height: 0; border-left: 20px solid transparent; border-right: 20px solid transparent; border-top: 20px solid hotpink;}.arrow-right { width: 0; height: 0; border-top: 60px solid transparent; border-bottom: 60px solid transparent; border-left: 60px solid cyan;}.arrow-left { width: 0; height: 0; border-top: 10px solid transparent; border-bottom: 10px solid transparent; border-right:10px solid green;}

HTML code:

<div class="arrow-up"></div>
<div class="arrow-down"></div>
<div class="arrow-left"></div>
<div class="arrow-right"></div>

Enjoy!