* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}
body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #111;
    text-align: center;
    color: white;
}
.container {
    max-width: 90%;
    padding: 20px;
    background: #222;
    border-radius: 15px;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}
img.logo {
    max-width: 120px;
    margin-bottom: 15px;
}
h1 {
    font-size: 2.2em;
    margin-bottom: 10px;
}
.btn {
    display: inline-block;
    padding: 15px 30px;
    font-size: 1.2em;
    color: black;
    background: #deff00;
    text-decoration: none;
    border-radius: 30px;
    transition: background 0.3s;
    margin-top: 10px;
    font-weight: bold;
}
.btn:hover {
    background: #c9e600;
}