Description

Tooltip shows a small popover above a trigger on hover or keyboard focus. It appears after a brief delay to avoid flashing on fast cursor passes, but disappears immediately on leave so it never blocks the interface. The hover target is the wrapper element, which lets the pointer drift onto the tooltip text without flicker.

Example

CSS

:root {
  --tt-in-dur: 150ms;
  --tt-out-dur: 50ms;
  --tt-scale: 0.98;
  --tt-delay: 80ms;
  --tt-in-ease: ease-out;
  --tt-out-ease: ease-out;
  --tt-bg: #ffffff;
  --tt-fg: #2f2f2f;
}

.t-tt-wrap {
  position: relative;
  display: inline-block;
}
.t-tt {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translate(-50%, 0) scale(var(--tt-scale));
  transform-origin: 50% 100%;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--tt-bg);
  color: var(--tt-fg);
  white-space: nowrap;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.06),
    0 2px 6px 0 rgba(0, 0, 0, 0.05),
    0 4px 42px 0 rgba(0, 0, 0, 0.06);
  opacity: 0;
  pointer-events: none;
  /* Default rule controls the LEAVE state. transition-delay
     stays unset so leaving plays without delay. */
  transition:
    opacity var(--tt-out-dur) var(--tt-out-ease),
    transform var(--tt-out-dur) var(--tt-out-ease);
}
/* The 50ms delay belongs ONLY to the hover rule so leaving
   the trigger snaps the delay back to 0 and the disappear
   plays immediately. */
.t-tt-wrap:hover .t-tt,
.t-tt-trigger:focus-visible + .t-tt {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
  transition-duration: var(--tt-in-dur);
  transition-timing-function: var(--tt-in-ease);
  transition-delay: var(--tt-delay);
}

@media (prefers-reduced-motion: reduce) {
  .t-tt {
    transition: none !important;
  }
}

React

import "./tooltip.css"; // paste the CSS above

export function Tooltip() {
  return (
    <span className="t-tt-wrap">
      <button className="t-tt-trigger" aria-describedby="my-tooltip">
        Copy
      </button>
      <span className="t-tt" id="my-tooltip" role="tooltip">
        Copied to clipboard
      </span>
    </span>
  );
}

Variables

Credit

Adapted from Tooltip on transitions.dev by Jakub Antalik. Original source: github.com/Jakubantalik/transitions.dev.