Sometimes we face some UI problem like for example
We need a line break in Internet Explorer 7. But we don't need that for other browser.
This can be done in many ways but i got a interesting solution of this.
write a CSS like this
and write a new line html code like below
<code><br class="breakOnlyInIE7" /></code>
That is our very known <br /> tag with a CSS class containing IE7 specific CSS Hack.
The above code will render <br /> tag only in IE7 and for rest of the browser no new line tag will be rendered! ;)