Dark Mode Alert

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Dark Mode Alert</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #212121;
color: #ffffff;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
.alert-container {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
display: flex;
justify-content: center;
align-items: center;
backdrop-filter: blur(5px);
-webkit-backdrop-filter: blur(5px);
z-index: 9999;
opacity: 0;
visibility: hidden;
transition: opacity 0.5s, visibility 0.5s;
}
.alert {
background-color: #333333;
border-radius: 15px;
padding: 25px;
box-shadow: 0 5px 20px rgba(0, 0, 0, 0.7);
text-align: center;
animation: fadeIn 0.5s ease-out;
}
@keyframes fadeIn {
from {
opacity: 0;
}
to {
opacity: 1;
}
}
.alert-header {
display: flex;
justify-content: center;
align-items: center;
font-size: 26px;
font-weight: bold;
margin-bottom: 15px;
}
.alert-header .icon {
margin-right: 10px;
}
.alert-body {
font-size: 20px;
margin-bottom: 20px;
}
.alert-footer {
display: flex;
justify-content: center;
}
.alert-footer button {
background-color: #00e676;
color: #212121;
border: none;
padding: 10px 20px;
border-radius: 5px;
cursor: pointer;
font-size: 16px;
transition: background-color 0.3s;
}
.alert-footer button:hover {
background-color: #00c853;
}
.show-alert {
opacity: 1;
visibility: visible;
}
.show-alert2 {
width: auto;
height: 50px;
background: #00e676;
border: none;
outline: none;
color: #fff;
border-radius: 5px;
padding-left: 3%;
padding-right: 3%;
opacity: 1;
visibility: visible;
cursor: pointer;
font-size: 1.2em;
}
</style>
</head>
<body>
<div class="alert-container" id="alertContainer">
<div class="alert">
<div class="alert-header">
<span class="icon">🌙</span>
<span>Dark Mode Alert</span>
</div>
<div class="alert-body">
This is a dark mode alert with fade-in animation.
</div>
<div class="alert-footer">
<button type="button" onclick="closeAlert()">Close</button>
</div>
</div>
</div>
<button type="button" onclick="showAlert()" class="show-alert2">Show Dark Mode Alert</button>
<script>
function showAlert() {
document.getElementById('alertContainer').classList.add('show-alert');
}
function closeAlert() {
document.getElementById('alertContainer').classList.remove('show-alert');
}
</script>
</body>
</html>

Dark Mode Alert - VexaX