Mention Chip Typing Effect
Typing @maya opens a small suggestion menu, then the name snaps into an accent-colored chip and typing carries on. The chip is a background plus a spread shadow, so the text never shifts.
Also known as: @mention animation css, tag a user typing animation, mention autocomplete effect.
HTML
<div class="txt-mention-chip-typing" aria-label="Nice work @maya!"> <span class="txt-mention-chip-typing-t" aria-hidden="true"><span style="--i: 0">N</span><span style="--i: 1">i</span><span style="--i: 2">c</span><span style="--i: 3">e</span><span style="--i: 4"> </span><span style="--i: 5">w</span><span style="--i: 6">o</span><span style="--i: 7">r</span><span style="--i: 8">k</span><span style="--i: 9"> </span><span class="txt-mention-chip-typing-at"><span style="--i: 10">@</span><span style="--i: 11">m</span><span style="--i: 12">a</span><span style="--i: 13">y</span><span style="--i: 14">a</span><span class="txt-mention-chip-typing-menu"><i></i>Maya Chen</span></span><span style="--i: 15; --x: 0.65s">!</span></span> </div>
CSS
.txt-mention-chip-typing {
--c: var(--txt-color, #3b82f6);
font-size: var(--txt-size, 32px);
font-family: system-ui, sans-serif;
font-weight: 700;
line-height: 1.2;
font-size: calc(var(--txt-size, 32px) * 0.85);
font-weight: 600;
white-space: nowrap;}
.txt-mention-chip-typing-t span:not([class]) {
position: relative;
opacity: 0;
animation: txt-mention-chip-typing-key 0s calc(0.3s + var(--i) * 80ms + var(--x, 0s)) forwards;
}
.txt-mention-chip-typing-t span:not([class])::after {
content: "";
position: absolute;
top: 0.12em;
bottom: 0.05em;
right: -0.05em;
width: 0.07em;
background: var(--c);
opacity: 0;
animation: txt-mention-chip-typing-caret 80ms step-end calc(0.3s + var(--i) * 80ms + var(--x, 0s));
}
/* the caret waits on the last letter of the name while the menu is open */
.txt-mention-chip-typing-at span:nth-child(5)::after {
animation-duration: 0.73s;
}
.txt-mention-chip-typing-t > span:last-child::after {
animation: txt-mention-chip-typing-blink 1s step-end calc(0.3s + var(--i) * 80ms + var(--x, 0s)) infinite;
}
.txt-mention-chip-typing-at {
position: relative;
border-radius: 0.3em;
animation: txt-mention-chip-typing-chip 0.25s ease-out 1.93s forwards;
}
.txt-mention-chip-typing-menu {
position: absolute;
top: 130%;
left: -0.2em;
display: flex;
align-items: center;
gap: 0.4em;
padding: 0.35em 0.7em 0.35em 0.4em;
border-radius: 0.5em;
font-size: 0.6em;
font-weight: 500;
color: currentColor;
background: color-mix(in srgb, currentColor 7%, transparent);
box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 15%, transparent);
opacity: 0;
transform-origin: 0 0;
animation: txt-mention-chip-typing-menu 0.9s ease-out 1.15s both;
}
.txt-mention-chip-typing-menu i {
width: 1.2em;
height: 1.2em;
border-radius: 50%;
background: linear-gradient(135deg, var(--c), color-mix(in srgb, var(--c) 40%, transparent));
}
@keyframes txt-mention-chip-typing-key {
to { opacity: 1; }
}
@keyframes txt-mention-chip-typing-caret {
0%, 100% { opacity: 1; }
}
@keyframes txt-mention-chip-typing-blink {
0% { opacity: 1; }
50% { opacity: 0; }
}
@keyframes txt-mention-chip-typing-menu {
0% { opacity: 0; transform: translateY(-0.3em) scale(0.95); }
15%, 70% { opacity: 1; transform: none; background: color-mix(in srgb, currentColor 7%, transparent); }
80%, 88% { opacity: 1; transform: none; background: color-mix(in srgb, var(--c) 22%, transparent); }
100% { opacity: 0; transform: none; }
}
@keyframes txt-mention-chip-typing-chip {
to {
color: var(--c);
background: color-mix(in srgb, var(--c) 15%, transparent);
box-shadow: 0 0 0 0.12em color-mix(in srgb, var(--c) 15%, transparent);
}
}
@media (prefers-reduced-motion: reduce) {
.txt-mention-chip-typing, .txt-mention-chip-typing *, .txt-mention-chip-typing::before, .txt-mention-chip-typing::after, .txt-mention-chip-typing *::before, .txt-mention-chip-typing *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
}Customizing this snippet
- Color: set
--txt-coloron the element or a parent. Currently previewing#3b82f6. - Font size: set
--txt-size. Every other dimension is inem, so the whole thing scales together. Currently previewing40px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.