#passwordStrength {
    height: 10px;
    margin-top: 5px;
    border-radius: 5px;
    transition: width 0.3s, background-color 0.3s;
}

.weak {
    width: 33%;
    background-color: red;
}

.medium {
    width: 66%;
    background-color: orange;
}

.strong {
    width: 100%;
    background-color: green;
}