.invalid {
    background: #FEEFEE;
    text-align: center;
    border-style: dotted;
    border-width: 3px;
    border-color: red;
}

.valid {
    background: #FBFBFB;
    text-align: center;
    border-style: solid;
    border-width: 3px;
    border-color: #E4ECFC;
}

.disabled {
    background: lightgray;
    opacity: 0.9;
}