Class not working. why?

The problem is that the class (#sbb) is not working. when i add another class it dosent work too. But when i delete a working class like #bb and insert the exact same code from #sbb it works.
That gives me the feeling of limitation in the amount of classes i can use at once.

the index file

<div id="bb">
		<br><a href="C:\Users\Adam\Desktop\ts\secondpage.html">Bastian Bier</a>
		<!---img class="pictures" src="C:\Users\Adam\Desktop\ts\smileyface.png"--->

	</div>

	<div id="sbb">
		<br><a href="C:\Users\Adam\Desktop\ts\secondpage.html">Sandro Bugiel</a>
		<!---img class="pictures" src="C:\Users\Adam\Desktop\ts\smileyface.png"--->

the CSS file

#bb {
	background-color: white;
	text-align: center;
	height: 80px;
	width: 300px;
	position: relative;
	right: -800px;
	top: -290px;

#sbb {
	background-color: white;
	text-align: center;
	height: 80px;
	width: 300px;
	position: relative;
	right: -800px;
	top: -290px;

2 posts were merged into an existing topic: Need help with my classes

Please do not create duplicate topics for the same challenge/project question(s). This duplicate topic has been unlisted and merged with the other topic.

Thank you.