##### 1.按钮组  ```html <div class="btn-group"> <button class="btn btn-default"> <span class="glyphicon glyphicon-arrow-left"></span> </button> <button class="btn btn-default"> <span class="glyphicon glyphicon-arrow-right"></span> </button> </div> ``` ##### 2.按钮工具栏 btn-toolbar  ```html <div class="btn-toolbar"> <div class="btn-group"> <button class="btn btn-default"> <span class="glyphicon glyphicon-search"></span> </button> <button class="btn btn-default"> <span class="glyphicon glyphicon-music"></span> </button> </div> <div class="btn-group"> <button class="btn btn-default"> <span class="glyphicon glyphicon-align-left"></span> </button> <button class="btn btn-default"> <span class="glyphicon glyphicon-align-center"></span> </button> <button class="btn btn-default"> <span class="glyphicon glyphicon-align-right"></span> </button> </div> </div> ```