with jQuery
by dfg312546
HTML
<h1 class="title">
Make me green
</h1>
<p class="para">
Make me red
</p>
<p class="para">
Me red too
</p>
<p class="para">
Also me
</p>
JavaScript
$('.title').css('color', 'green');
$('.para').css('color', 'red')