.errorDisplay {
    margin-top: .3em;
    margin-bottom: .3em;
    background-color: red;
    visibility: hidden;
    position:absolute;
    font-size: 75%;
    padding: 3%;
    border-radius: .5ex;
    color: whitesmoke;
    text-align: center;
}

.errorDisplay.error {
    visibility: visible;
    position:unset;
}