婷婷同学_
form-control有两个属性影响换行..form-control {width:100%;display: block;}可以新增一个class.form-control-xxx {width:200px;display:inline;}这个css要放到bootstrap.css下面html如下<div class="form-group"><input type="text" class="form-control form-control-xxx" value=""><button class="btn btn-sm btn-danger">-</button></div>