.txt_error {
    /*font-size: xx-large;*/
    font-size: 2em;
    position: absolute;
    -webkit-user-select: none; /* Safari */
    -ms-user-select: none; /* IE 10 and IE 11 */
    user-select: none; /* Standard syntax */
    pointer-events: none;
    z-index: 50;
    font-family: 'Playpen Sans';
}
/* telephone */
@media screen and (max-width: 810px) {
    .txt_error {
        font-size: 1em;
    }
}