Line break after a text box

Hi everyone,

I have a quick question for you guys.

I have just inserted a text box in an article withe the following code:

<div style=”width: 500px; float: right; background-color: #eeb4b4; margin-left: 18px; padding: 12px; text-align: left;”>TEXT</div>

As much as almost everything works well, I have a small but annoying problem.
I can not create a space between the text box and the h2 title that is right beneath it (you can check the article I am talking about here, the text box is at the end of the first section)
.
I’ve tried
but it doesn’t work.

Any suggestions?