.content{
    margin-top: 10px;
    margin-bottom: 10px;
    background-color: rgb(223, 215, 215);
    padding: 20px;
    width: 100%;
}
#display{
    width: 100%;
}
#slider{
    width: 100%;
}
#length{
    display: inline-block;
    width: 100px;
}
.previous_passwords{
    margin-bottom: 20px;
}