An animated login UI built with pure HTML and CSS that incorporates smooth transitions and subtle motion effects within a structured authentication layout. It enhances interaction feedback and visual engagement without requiring JavaScript.
Usage
Use this component when interfaces require visually engaging authentication forms, such as SaaS platforms, landing pages, admin dashboards, or modern web applications.
Implementation
The animation effects are achieved using CSS transition and transform techniques, applied to input fields, buttons, or container elements. Responsive styling ensures smooth behavior across screen sizes.
HTML
<form class="login animated">
<input placeholder="Email">
<input placeholder="Password">
<button>Login</button>
</form>CSS
.login.animated{
max-width:280px;
margin:auto;
padding:24px;
border-radius:14px;
background:var(--login-bg);
color:var(--login-text);
border:1px solid var(--login-border);
animation:fadeInUp .5s ease-out both;
}
.login.animated input{
width:100%;
margin:8px 0;
padding:10px 12px;
border-radius:8px;
font-size:13px;
background:var(--input-bg);
color:var(--login-text);
border:1px solid var(--input-border);
}
.login.animated input::placeholder{
color:var(--input-placeholder);
}
.login.animated button{
width:100%;
margin-top:10px;
padding:10px;
border:none;
border-radius:8px;
background:var(--btn-bg);
color:#ffffff;
font-size:13px;
cursor:pointer;
transition:transform .15s ease, background .2s ease;
}
.login.animated button:hover{
background:var(--btn-hover);
transform:translateY(-1px);
}
@keyframes fadeInUp{
from{
opacity:0;
transform:translateY(16px);
}
to{
opacity:1;
transform:translateY(0);
}
}
:root{
--login-bg:#ffffff;
--login-text:#0f172a;
--login-border:#e5e7eb;
--input-bg:#ffffff;
--input-border:#cbd5e1;
--input-placeholder:#64748b;
--btn-bg:#2563eb;
--btn-hover:#1d4ed8;
}
@media (prefers-color-scheme: dark){
:root{
--login-bg:#020617;
--login-text:#e5e7eb;
--login-border:#1f2937;
--input-bg:#020617;
--input-border:#1f2937;
--input-placeholder:#94a3b8;
--btn-bg:#3b82f6;
--btn-hover:#60a5fa;
}
}Notes
- Built with pure HTML and CSS
- No JavaScript required
- Uses transition based motion effects
- Enhances login interaction visibility
- Fully responsive across breakpoints
- Suitable for SaaS and application login pages
- Easy to customize animation timing and easing
Preview styles shown. Production customization recommended.
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