Monsoon v0.2.0
Made by Alexandre Kohler Star

Navigation and overlays

Back to top

A round button fixed to the corner that fades in after the page scrolls, driven by a scroll timeline where supported. Use .back-to-top-static to place it inline.

Navigation and overlays2 classesNo JavaScriptLight and dark

Example

Full

Classes

2 classes. Click a name to copy it. Utilities on the same element always win over component defaults, so any of them can be adjusted with plain utility classes.

ClassTypeWhat it does
Base Base class of the back to top. On an <a> in the example. Sets generated content, width, height, background, fixed position and offsets.
CSS
.back-to-top::before {
  mask-image: var(--m-nav-up);
}

.back-to-top:hover {
  transform: translateY(-2px);
  background: var(--surface-2);
}
Modifier Modifier, combined with the back-to-top class. On an <a> in the example. Sets static position.
CSS
.back-to-top-static {
  position: static;
}

@supports (animation-timeline: scroll()) {
  .back-to-top:not(.back-to-top-static) {
    animation: m-nav-reveal linear both;
    animation-timeline: scroll(root);
    animation-range: 0 20rem;
  }
}

Usage

Components ship inside the same stylesheet as the utilities. There is nothing else to install and no script to load: link Monsoon and write the markup.

index.html
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/monsooncss">

<!-- Back to top: start from the base class, then add modifiers -->
<a href="#top" class="back-to-top back-to-top-static" aria-label="Back to top"></a>

Theme it with --seed on any ancestor, for example style="--seed: #0d9488", and force a scheme with class="dark" or class="light" on a wrapper.

Accessibility

  • Every interactive part shows a visible focus ring with :focus-visible, and tone colors pair with -foreground tokens that keep text at 4.5:1 or better in light and dark mode.

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