清除高亮_____________________能修改按钮和输入框的默认样式_________________

A. JavaScript
B. jQuery
C. Angular JS
D. Node JS

A. col-sm-6 col-md-4，col-sm-6 col-md-4，col-sm-6 col-md-4
B. col-sm-6 col-lg-4，col-sm-6 col-lg-4，col-sm-6 col-lg-4
C. col-xs-6 col-lg-4，col-xs-6 col-lg-4，col-xs-6 col-lg-4
D. col-xs-6 col-md-4，col-xs-6 col-md-4，col-xs-6 col-md-4

A. nav-vertical
B. nav-tabs
C. nav-pill
D. nav-stacked

A. navbar-fixed-top
B. navbar-fixed-bottom
C. navbart-static-top
D. navbar-inverse