The website https://bansal.io/pattern-css was clearly produced on a platform with overlay scrollbars. There are a number of horizontal scrollbars that shouldn’t be there.

  .overflow-scroll {
    overflow: scroll !important;
  }

`overflow: scroll` is pretty much never what you want: it draws scrollbars whether needed or not. You want `overflow: auto` instead, which doesn’t draw scrollbars unless necessary.

  .w-100vw {
    width: 100vw !important;
  }

Viewport units are fundamentally broken by design. Don’t ever use them for layout. In fact I recommend against using them in any situation at all. In this case, use `width: 100%` or just nothing, and it’ll yield the desired results.