.validation-error {
    color:#FF0000;
}

.customError {
    position : relative;
}

.customError input, .customError textarea {
    color: red;
    border: 2px solid red!important;
}

.customError:hover span {
    display: block;
}

.customError span {
    display: none;
    /* Position the tooltip */
    position: absolute;
    z-index: 1;
    border: 2px solid red;
    border-radius: 6px;
    padding: 5px 20px 5px 5px;
    text-align: center;
    background-color: white;
    width: 250px;
}