Field Error Alert
A copy-paste toasts & alerts component in pure HTML & CSS. Zero dependencies, framework-agnostic, MIT-licensed.
Toasts & AlertsHTMLCSSany framework
Enter a valid email address
Copy into your project
HTML
<div class="nuda-ta2-field">
<label class="nuda-ta2-field__label" for="ta2-field-error-email">Email address</label>
<input id="ta2-field-error-email" class="nuda-ta2-field__input" type="email"
value="ana@company" aria-invalid="true" aria-describedby="ta2-field-error-msg">
<p class="nuda-ta2-field__error" id="ta2-field-error-msg" role="alert" aria-live="assertive">
<span aria-hidden="true">⚠</span> Enter a valid email address
</p>
</div>CSS
.nuda-ta2-field {
--r: #ff5e7a;
display: flex;
flex-direction: column;
gap: .4rem;
min-width: 230px;
max-width: 280px;
}
.nuda-ta2-field__label {
color: #cfcfcf;
font-size: .75rem;
font-weight: 600;
}
.nuda-ta2-field__input {
min-height: 44px;
box-sizing: border-box;
padding: 0 .75rem;
border-radius: 8px;
border: 1.5px solid var(--r);
background: #161616;
color: #fafafa;
font-size: .85rem;
animation: _nuda-ta2fieldshake .4s ease;
}
.nuda-ta2-field__input:focus-visible {
outline: 2px solid var(--r);
outline-offset: 2px;
}
.nuda-ta2-field__error {
display: flex;
align-items: center;
gap: .35rem;
color: var(--r);
font-size: .72rem;
margin: 0;
animation: _nuda-ta2fielderrin .25s ease-out both;
}
@keyframes _nuda-ta2fieldshake {
0%,100% {
transform: translateX(0);
}
20%,60% {
transform: translateX(-3px);
}
40%,80% {
transform: translateX(3px);
}
}
@keyframes _nuda-ta2fielderrin {
from {
opacity: 0;
transform: translateY(-4px);
}
to {
opacity: 1;
transform: none;
}
}
@media (prefers-reduced-motion:reduce) {
.nuda-ta2-field__input {
animation: none;
}
.nuda-ta2-field__error {
animation: none;
}
}
How to use Field Error Alert
Paste the HTML where you need it and the CSS into a global stylesheet (or a <style> tag). Every class is prefixed nuda- so it never collides with Tailwind or your own styles. Tweak the CSS custom properties to match your design system.
Works in React, Vue, Svelte, Astro, Next.js, Nuxt, Laravel Blade, Django, Rails — or a single .html file. No npm install, no build step.