offsetting an html anchor to adjust for fixed header

Matt Dryden picture Matt Dryden · May 24, 2012 · Viewed 620.8k times · Source

I am trying to clean up the way my anchors work. I have a header that is fixed to the top of the page, so when you link to an anchor elsewhere in the page, the page jumps so the anchor is at the top of the page, leaving the content behind the fixed header (I hope that makes sense). I need a way to offset the anchor by the 25px from the height of the header. I would prefer HTML or CSS, but Javascript would be acceptable as well.

Answer

Jan picture Jan · Nov 1, 2012

You could just use CSS without any javascript.

Give your anchor a class:

<a class="anchor" id="top"></a>

You can then position the anchor an offset higher or lower than where it actually appears on the page, by making it a block element and relatively positioning it. -250px will position the anchor up 250px

a.anchor {
    display: block;
    position: relative;
    top: -250px;
    visibility: hidden;
}