Spacing blocks with line break

Question

I would like to know the following, the blogger is very clueless, because it removes the paragraphs <p>, and add line breaks. '<br>'

The problem that line breaks I can not spacing, the most I do is adiconar a line-height: 30px;

There is something in the css to make the addition of blocks as the paragraph because the blogger I only have line break:

<p> Block 1 </ p>
<p> Block 2 </ p>
<p> Block 3 </ p>

Blogger:

Text 1 </ br>
text 2 </ br>
text 3 </ br>

I thought about using JS, convert
in

. Something like:

$ ('.post').append ('<p>').prepend ('</p>')..;
$ ('.post br').replaceWith ('</p><p>');

Would I can solve this problem without using JS, JS because I would have to remove tags like <code>, <pre> etc ...