李丰 ：想问李翔 ，本质上你卖给用户的更多的是内容还是服务? 李翔：是结合在一起的 。
| Name | Class | Description |
|---|---|---|
| Default | None | No styles, just columns and rows |
| Basic | .table | Only horizontal lines between rows |
| Bordered | bordered | Rounds corners and adds outer border |
| Zebra-stripe | striped | Adds light gray background color to odd rows (1, 3, 5, etc) |
| Condensed | condensed | Cuts vertical padding in half, from 8px to 4px, within all td and th elements |
<form class="well">
<label>Label name</label>
<input type="text" class="span3" placeholder="Type something">
<span class="help-block">Example block-level help text here.</span>
<label class="checkbox">
<input type="checkbox"> Check me out
</label>
<button type="submit" class="btn">Submit</button>
</form>