Sep 24, 2021 · What the first part does is set both the width and max-width to 100vw. “vw” is a CSS unit of measurement that is a percentage of the viewport width. So, 100vw is 100% of the viewport width (aka, the browser window). The second part uses calc () to calculate half of the width of the container minus half of the viewport width to come up with .... "/> git fetch origin uworld notes