body {
    background-color: #5F5F5F;
    color: #FFFFFF;
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.container {
    width: 300px;
    padding: 20px;
    box-sizing: border-box;
    background-color: #333333;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

h1 {
    text-align: center;
    color: #4CAF50;
    position: relative;
    top: 10px;
}

form {
    text-align: left;
}

label {
    display: block;
    margin: 10px 0;
    color: #4CAF50;
}

input {
    width: calc(100% - 20px);
    padding: 10px;
    margin-bottom: 15px;
    box-sizing: border-box;
    border: 1px solid #4CAF50;
    border-radius: 5px;
    background-color: #333333;
    color: #FFFFFF;
}

input[type="submit"] {
    width: 100%;
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    padding: 12px;
}

input[type="submit"]:hover {
    background-color: #45a049;
}