Adding an automatic offset to the scroll position for all hash-links/calls

Nowadays in 2021 there’s a nice simple only-css solution with :target and scroll-margin-top

:target {
    scroll-margin-top: 100px;
}

It works in all major browsers

References:

• https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-margin-top
• https://developer.mozilla.org/en-US/docs/Web/CSS/%3Atarget