label {
    display: block;
    margin: 5px 0;
}

#login form {
    width: 450px;
    margin: 0 auto;
}

h1 {
    text-align: center;
}

.error{
    display: block;
    text-align: center;
    background: orange;
}

.notes{
    display: block;
    text-align: center;
    background: yellow;
}

.right{
    text-align: right
}
.user{
    background: lime;
    float: right;
}