/* O fechamento do dialog permanece sempre legivel, mesmo sem o glifo externo. */
.dialog-close > i {
    display: none !important;
}

.dialog-close::before {
    content: '\00d7';
    display: inline-block;
    color: currentColor;
    font-family: Arial, sans-serif;
    font-size: 1.55rem;
    font-weight: 400;
    line-height: 1;
}