html-form-validation/src/css/validator.css

HTML forms validation plugin

.form-input .error {
    display: none;
    width: 100%;
    margin-top: 5px;
    font-size: 12px;
    color: #d42727;
}

.form-input.incorrect .error {
    display: block;
}

.form-input.incorrect input,
.form-input.incorrect textarea,
.form-input.incorrect select {
    border-color: #d42727;
}