body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    background-color: white;
    padding: 40px;
    box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.1);
}

.input-group {
    margin-bottom: 20px;
}

input[type="password"] {
    padding: 10px;
    font-size: 16px;
    width: 250px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#strength {
    margin-top: 20px;
}

#strength-value {
    font-weight: bold;
}

.strength-bar {
    width: 250px;
    height: 10px;
    border-radius: 5px;
    background-color: lightgray;
}

.strength-bar.green {
    background-color: green;
}

.strength-bar.yellow {
    background-color: yellow;
}

.strength-bar.red {
    background-color: red;
}