Ionic 4 overwrite disabled input opacity

[MrTrieu]

[ionic-v4] shadow-dom

I migrate my app from v3 to v4 and I have many problems with CSS and shadow-dom. How can I change the CSS for a child-element in shadow-root. Example I want to change css for class .button-inner in ion-button here is my code for ionic v3 .long-text-button .button-inner { font-size: 12px; padding: 0px; margin: 0px; text-align: center; white-space: normal; } I can’t use it in v4 because it wrap in shadow-root