How to add border to <div>

Answer 1

You specify a height and a width then you add (CSS)

border: 1px solid #000;

1px refers to the border thickness. increase it if you want thicker borders
solid refers to the type of the borders. there are many others.
#000 refers to the color. you can write the name of the color instead like black, white, red for instance.

Answer 2

<div style="border:1px solid black;">...<\div>

Answer 3

Thanks KINGDX

Answer 4

Thanks for everyone who answered.(sorry i can't type the name on my keyboard can't find the right characters.