bootstrap之：按钮(button)

btn基础按钮              btn-success 成功按钮    btn-danger 危险按钮

btn-default 默认按钮  btn-info      信息按钮    btn-link      链接按钮

btn-primary 主要按钮 btn-warning 警告按钮

<button class="btn" type="button">基础按钮.btn</button> 
   <button class="btn btn-default" type="button">默认按钮.btn-default</button>
   <button class="btn btn-primary" type="button">主要按钮.btn-primary</button>
   <button class="btn btn-success" type="button">成功按钮.btn-success</button>
   <button class="btn btn-info" type="button">信息按钮.btn-info</button>
   <button class="btn btn-warning" type="button">警告按钮.btn-warning</button>
   <button class="btn btn-danger" type="button">危险按钮.btn-danger</button>
   <button class="btn btn-link" type="button">链接按钮.btn-link</button>