How Can I Prevent Scrollbars from Shifting My Center-Aligned DIV?

Preventing Scrollbar from Repositioning Web Page

When incorporating a center-aligned DIV within a website, the presence of a scrollbar on certain pages can create a visual incongruity. As users navigate between pages with and without scrolling needs, the appearance of the scrollbar disrupts the alignment, shifting the page slightly sideways. This issue can be addressed without explicitly displaying scrollbars on all pages.

Solution:

To prevent the scrollbar from repositioning the page, the overflow-y property should be applied to the tag. This approach ensures that the scrollbar is activated only when the content exceeds the height of the viewport.

html {
  overflow-y: scroll;
}

Applying this style to the element is crucial, as targeting the element can result in a double scrollbar appearing in Internet Explorer 7. By explicitly indicating that the HTML document should scroll vertically, the scrollbar becomes independent of the content, preserving the page's alignment and avoiding unexpected shifts.

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