* {
    box-sizing: border-box;
}

body {
    background-color: #121212;
    color: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    font-size: 18px;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-color: #1f1f1f;
    border-bottom: 2px solid #4CAF50;
    font-size: 24px;
    height: 20vh;
}

header h1 {
    text-align: center;
}

main {
    height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 20px;
    font-size: 20px;
}

form {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 20px;
    font-size: 20px;
    gap: 20px;
}

form input{
    width: 100%;
    padding: 10px;
    margin: 5px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

form button {
    width: 100%;
    background-color: #4CAF50;
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
}

form button:hover {
    background-color: #45a049;
}

footer {
    height: 10vh;
    display: flex;
    align-items: center;
    justify-content: center;
    bottom: 0;
    background-color: #1f1f1f;
    border-top: #4CAF50;
}

footer img {
    border-radius: 50%;
    width: 50px;
    height: 50px;
    margin: 10px;
}

footer a {
    color: #ffffff;
    text-decoration: none;
    font-size: 18px;
}

footer a:hover {
    text-decoration: underline;
}