Test case details

Preparation Code

<div id="1"></div> <div id="2"></div> <div id="3"></div><script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

Test cases

Test #1

$('#1').css('background-color','steelblue');

Test #2

$('#1').css('background-color','#4863A0');