How to use the bs-css/src/Css.js.margin2 function in bs-css

var header = Css.style(/* :: */[
      Css.backgroundColor(Css.hex("db4d3f")),
      /* :: */[
        Css.marginBottom(Css.px(16)),
        /* [] */0
      ]
    ]);

var content = Css.style(/* :: */[
      Css.display(/* flex */-1010954439),
      /* :: */[
        Css.alignItems(/* center */98248149),
        /* :: */[
          Css.justifyContent(/* spaceBetween */516682146),
          /* :: */[
            Css.margin2(Css.px(0), /* auto */-1065951377),
            /* :: */[
              Css.maxWidth(Css.px(1000)),
              /* :: */[
                Css.padding2(Css.px(16), Css.px(24)),
                /* [] */0
              ]
            ]
          ]
        ]
      ]
    ]);

var h1 = Css.style(/* :: */[
      Css.margin(Css.px(0)),
      /* [] */0
    ]);