Webleb - fragmentos de código

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>404 - Page Not Found with Key Generation</title>
    <link href="https://fonts.googleapis.com/css2?family=Poppins:wght@300&display=swap" rel="stylesheet">
    <link rel="stylesheet" href="apple.css">
</head>
<body>
    <div class="container">
        <h1 class="error-title">404</h1>
        <p class="error-subtitle">Page Not Found</p>
        <p>Oops! The page you're looking for doesn't exist.</p>
        <p>Error Key: <span id="error-key"></span></p>

<div class="buttons">
            <a href="/" class="btn">Go Home</a>
            <button class="btn" id="copy-btn">Copy Error</button>
        </div>
    </div>

<div class="notification" id="notification">
        <button class="close-btn" id="close-btn">×</button>
        <span>Successfully copied the error.</span>
    </div>

CSS

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #111;
    color: #fff;
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
}

.container {
    background-color: #222;
    padding: 40px 60px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
    max-width: 500px;
    width: 90%;
}

.error-title {
    font-size: 6rem;
    margin-bottom: 20px;
    color: #fff;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
    transition: color 0.5s ease, text-shadow 0.5s ease;
}

.error-title:hover {
    color: #fe5c5c;
    text-shadow: 0 0 25px rgba(255, 95, 95, 0.8), 0 0 50px rgba(255, 112, 112, 0.6);
}

.error-subtitle {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.8);
}

p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.85);
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn {
    text-decoration: none;
    color: #fff;
    background-color: transparent;
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 300;
    border: 1px solid rgba(255, 255, 255, 0.6);
    transition: all 0.3s ease;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: #042d19;
    color: #a3f9b6; 
    padding: 10px 20px;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center; 
    max-width: 320px;
    font-size: 0.95rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.notification.show {
    opacity: 1;
    visibility: visible;
}

.notification .close-btn {
    background-color: transparent;
    border: none;
    color: #a3f9b6;
    font-size: 1.2rem;
    cursor: pointer;
    width: 30px; 
    height: 30px; 
    border-radius: 50%; 
    display: flex;
    justify-content: center;
    align-items: center;
    margin-left: 10px;
    transition: background-color 0.3s ease;
}

.notification .close-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

#error-key {
    font-weight: bold;
    font-size: 1.2rem;
    color: #a3f9b6;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container {
    background: linear-gradient(135deg, #2c2c2c, #1a1a1a);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn {
    background-color: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.4);
}

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