Auto-Growing Textarea

<!-- field-sizing: content (Chromium 123+) grows the box with input, no JS.
     Where unsupported it degrades to a normal fixed-size resizable textarea. -->
<div class="nuda-fs2-autogrow-textarea">
  <label for="fs2-note" class="nuda-fs2-autogrow-textarea__label">Note</label>
  <textarea id="fs2-note" class="nuda-fs2-autogrow-textarea__input" rows="1">Type here — the box grows with your text.
No JS needed for the resize itself.</textarea>
</div>

.nuda-fs2-autogrow-textarea {
  width: 100%;
  max-width: 270px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: ui-sans-serif,system-ui,sans-serif;
}

.nuda-fs2-autogrow-textarea__label {
  font-size: 12px;
  font-weight: 600;
  color: #cfcfcf;
}

.nuda-fs2-autogrow-textarea__input {
  width: 100%;
  min-height: 44px;
  max-height: 220px;
  padding: 11px 12px;
  background: #161616;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 9px;
  color: #fafafa;
  font-size: 13px;
  font-family: inherit;
  line-height: 1.4;
  box-sizing: border-box;
  resize: none;
  field-sizing: content;
  transition: border-color .2s,box-shadow .2s;
}

.nuda-fs2-autogrow-textarea__input:focus-visible {
  outline: 2px solid #e4ff54;
  outline-offset: 2px;
  border-color: #e4ff54;
}

@media (prefers-reduced-motion:reduce) {
  .nuda-fs2-autogrow-textarea__input {
    transition: none !important;
  }
}