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

body {
    background: #111;
    font-family: 'Arial', sans-serif;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    padding: 20px;
}

header h1 {
    font-size: 3em;
    color: #76b852;
}

header p {
    font-size: 1.2em;
    margin-bottom: 20px;
}

button {
    padding: 15px 30px;
    background-color: #76b852;
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.2em;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #557a38;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    button {
        font-size: 1em;
        padding: 10px 20px;
    }
}