Character Counter Typing Effect
A commit message types in while a counter and a small progress ring keep count, tick for tick. One registered integer drives the counter text, the ring and the steps() typing together.
Also known as: character count animation css, text counter typing, commit message counter.
Commit summary
Fix login redirect
HTML
<div class="txt-character-counter-typing"> <span class="txt-character-counter-typing-label">Commit summary</span> <span class="txt-character-counter-typing-line"><span class="txt-character-counter-typing-t">Fix login redirect</span><span class="txt-character-counter-typing-caret" aria-hidden="true"></span></span> <span class="txt-character-counter-typing-count" aria-hidden="true"><i></i></span> </div>
CSS
@property --txt-character-counter-typing-n {
syntax: "<integer>";
initial-value: 0;
inherits: true;
}
.txt-character-counter-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;
display: inline-grid;
gap: 0.35em;
box-sizing: border-box;
width: 15em;
padding: 0.75em 0.9em 0.6em;
border-radius: 0.6em;
font-size: calc(var(--txt-size, 32px) * 0.6);
font-weight: 500;
text-align: left;
background: color-mix(in srgb, currentColor 5%, transparent);
box-shadow: inset 0 0 0 1px color-mix(in srgb, currentColor 16%, transparent);
/* 18 characters: the width, the counter and the ring all step together */
animation: txt-character-counter-typing-count 1.44s steps(18) 0.4s forwards;}
.txt-character-counter-typing-label {
font-size: 0.75em;
color: color-mix(in srgb, currentColor 50%, transparent);
}
.txt-character-counter-typing-line {
font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
font-weight: 600;
white-space: pre;
}
.txt-character-counter-typing-t {
display: inline-block;
vertical-align: top;
overflow: hidden;
width: calc(var(--txt-character-counter-typing-n) * 1ch);
}
.txt-character-counter-typing-caret {
display: inline-block;
vertical-align: top;
width: 0.09em;
height: 1.1em;
margin-top: 0.05em;
background: var(--c);
animation: txt-character-counter-typing-blink 1s step-end infinite;
}
.txt-character-counter-typing-count {
display: flex;
align-items: center;
justify-content: flex-end;
gap: 0.4em;
font-size: 0.75em;
font-variant-numeric: tabular-nums;
color: color-mix(in srgb, currentColor 60%, transparent);
counter-reset: txt-character-counter-typing-c var(--txt-character-counter-typing-n);
}
.txt-character-counter-typing-count::before {
content: counter(txt-character-counter-typing-c) " / 50";
}
.txt-character-counter-typing-count i {
width: 1.1em;
height: 1.1em;
border-radius: 50%;
/* 7.2deg = one character of 50 */
background: conic-gradient(var(--c) calc(var(--txt-character-counter-typing-n) * 7.2deg), color-mix(in srgb, currentColor 15%, transparent) 0);
-webkit-mask: radial-gradient(farthest-side, transparent 55%, #000 58%);
mask: radial-gradient(farthest-side, transparent 55%, #000 58%);
}
@keyframes txt-character-counter-typing-count {
99.9%, to { --txt-character-counter-typing-n: 18; }
}
@keyframes txt-character-counter-typing-blink {
50% { opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
.txt-character-counter-typing, .txt-character-counter-typing *, .txt-character-counter-typing::before, .txt-character-counter-typing::after, .txt-character-counter-typing *::before, .txt-character-counter-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.