How do you make a working hamburger icon?

Question

Is this how you set it up html?

<div class="bar1"></div>
<div class="bar2"</div>
<div class="bar3"></div>

Answer 1

The code you have given is correct.
There are a lots of way to make a hamburger.

Answer 2

For complex drawing use graphics designing app like adobe illustrator, gimp.. And copy past the svg CSS is not best choice