基本CSS样式

http://v2.bootcss.com/base-css.html

93 Twitter Bootstrap HTML Templates

https://shapebootstrap.net/

多选择下拉框

http://www.jqueryscript.net/form/jQuery-Multiple-Select-Plugin-For-Bootstrap-Bootstrap-Multiselect.html

菜鸟工具

http://www.runoob.com/bootstrap/bootstrap-forms.html