Change Height Using CSS


Answer :

You can't change the height of the br tag itself, as it's not an element that takes up space in the page. It's just an instruction to create a new line.

You can change the line height using the line-height style. That will change the distance between the text blocks that you have separated by empty lines, but natually also the distance between lines in a text block.

For completeness: Text blocks in HTML is usually done using the p tag around text blocks. That way you can control the line height inside the p tag, and also the spacing between the p tags.


This feels very hacky, but in chrome 41 on ubuntu I can make a <br> slightly stylable:

br {   content: "";   margin: 2em;   display: block;   font-size: 24%; }

I control the spacing with the font size.

Update

I made some test cases to see how the response changes as browsers update.

*{outline: 1px solid hotpink;} div {   display: inline-block;   width: 10rem;   margin-top: 0;   vertical-align: top; }  h2 {   display: block;   height: 3rem;   margin-top:0; }  .old br {   content: "";   margin: 2em;   display: block;   font-size: 24%;   outline: red; }  .just-font br {   content: "";   display: block;   font-size: 200%; } .just-margin br {   content: "";   display: block;   margin: 2em; }  .brbr br {   content: "";   display: block;   font-size: 100%;   height: 1em;   outline: red;   display: block; }
<div class="raw">   <h2>Raw <code>br</code>rrrrs</h2>   bla<BR><BR>bla<BR>bla<BR><BR>bla </div>    <div class="old">   <h2>margin & font size</h2>   bla<BR><BR>bla<BR>bla<BR><BR>bla </div>    <div class="just-font">   <h2>only font size</h2>   bla<BR><BR>bla<BR>bla<BR><BR>bla </div>   <div class="just-margin">   <h2>only margin</h2>   bla<BR><BR>bla<BR>bla<BR><BR>bla </div>     <div class="brbr">   <h2><code>br</code>others vs only <code>br</code>s</h2>   bla<BR><BR>bla<BR>bla<BR><BR>bla </div>

They all have their own version of strange behaviour. Other than the browser default, only the last one respects the difference between one and two brs.


Take a look at the line-height property. Trying to style the <br> tag is not the answer.

Example:

<p id="single-spaced">     This<br>     text<br>     is<br>     single-spaced. </p> <p id="double-spaced" style="line-height: 200%;">     This<br>     text<br>     is<br>     double-spaced. </p>

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