Bootstrap 3.1 全新版本发布了，包含如下新特性：
Three new templates: Blog, Cover, and Dashboard.
#10884: Add .info variant to contextual table classes.
#11138: Add contextual styles to list groups.
#11162: Add new sizes, .modal-lg and .modal-sm, to modals for quicker settings on modals. Only applies to modals above the small breakpoint.
#11193: Add element styles to indicate user input via keyboard.
#11244: Add .animation() mixins.
#11572: Add contextual background-color classes to match our existing text classes. (This also moves both sets of classes to the Helper Classes section of the CSS docs.)
#11675: Add .text-justify class to round out the text alignment classes.
#11836: Add new form control feedback classes to toggle icons for each validation state. Works on regular forms, horizontal, and inline.
同时还包含多项其他包括 CSS 和 JavaScript 在内的改进，详情请看https://github.com/twbs/bootstrap/releases/tag/v3.1.0
项目主页：https://github.com/twbs/bootstrap
来自:开源中国社区
