The default grid system provided in Bootstrap utilizes 12 columns that render out at widths of 724px, 940px (default without responsive CSS included), and 1170px. Below 767px viewports, the columns become fluid and stack vertically.
你用一个PPT就能上市的时代结束了 ，上新三板也不行 。这些一度站在风口中领域，自然也在风口中淘汰出一批 。