第一视频网_程雪柔第1章阅读

Base on Bootstrap grid system, you can get the columns as you want. 12 / (cols) = col-lg-(each-col-width-taken), like 12/3 = col-lg-4, 12/5 = col-lg-2.4 (replace the '.' with '-')

    1. col-lg-12
          col-lg-6

          col-lg-6

          col-lg-4
          col-lg-4
            col-lg-4
            col-lg-3
            col-lg-3
            col-lg-3

            col-lg-3
            col-lg-2-4
            col-lg-2-4

              col-lg-2-4
              col-lg-2-4

              col-lg-2-4
                  col-lg-2
                  col-lg-2

                  col-lg-2
                    col-lg-2
                    col-lg-2
                    col-lg-2

                    Mobile, tablet, and desktop

                    col-xs-6
                    col-xs-6
                    col-lg-8
                    col-sm-6
                    col-sm-6
                    col-lg-6
                    col-md-6
                    col-md-6
                    col-lg-4
                    col-sm-6
                    col-sm-6
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