Changing colors of lightning-button

1.8K    Asked by FranciscoMcmillon in Power BI , Asked on Jul 20, 2021

 How can I change the colors of lightning-buttonI tried doing this in my css:

.my-button { background-color: #14a6bc; color: #ffffff; }

and applying that class to my and removing the variant but I still get the base colors? I am trying to use these examples:

https://developer.salesforce.com/docs/component-library/bundle/lightning-button/example

Answered by Caroline Brown

Based on my understanding of the documentation, your CSS cannot reach into the child component of the lightning:button component: Styles defined in a component’s style sheet are scoped to the component. This rule allows a component to be reused in different contexts without losing its style. It also prevents a component’s styles from overriding styles in other parts of a page. The trailhead module Lightning Web Components for Aura Developers further expands on the concept. 

CSS Encapsulation with Shadow DOM Lightning web components use a web-standard mechanism called shadow DOM that hides the elements inside the component from the page that contains the component. Because lightning:button web components have a shadow DOM, styles defined in a component’s style sheet are scoped to the component. They don’t apply to parent, child, or sibling components. This rule is strict, but it allows a component to be reused in different contexts without losing its styling. It also prevents a component’s styles from overriding styles in other parts of a page.



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