.twc-malidc-sign-up h1 ~ h3 { visibility : hidden; } .twc-malidc-sign-up h1 ~ h3::before { content : 'Testing changing the text.'; display : block; visibility : visible; } .twc-malidc-sign-up .twc-malidc-sign-up-password-confirm ~ div { visibility : hidden; } .twc-malidc-sign-up .twc-malidc-sign-up-password-confirm ~ div::after { content : 'Testing changing the text.'; display : block; visibility : visible; }