<style type="text/css"> div { background-color: #e7f7e7; border: 1px solid #ccc; padding: 2px; width:100px; } div#div2 { background-color: #ffdddd; border: 1px solid #ccc; padding: 2px; width:150px; } div.div3 { background-color: #f3f3f3; border: 1px solid #ccc; padding: 2px; width:200px; } </style> <div>Hello World #1</div> <br /> <div id="div2">Hello World #2</div> <br /> <div class="div3">Hello World #3</div>