I want to increase the min-width of the slds-tree_container as the text gets wrapped beyond a certain width.


         <lightning-tree items={roleItems} class="" onselect={handleSelect} >

enter image description here

Because of the new Shadow DOM styling in LWC I can't change the CCS style of the inner components (In this case slds-tree_container). Is there a way to set auto width ?

1 Answer 1


Normally for a web component, this would work

const treeElement = this.template.querySelector("lightning-tree");
let style = document.createElement("style");
style.innerHTML = ".slds-tree_container { min-width: 800px; }";

but because of lightning locker service accessing shadow dom is not allowed(which is a good thing) .

I would recommend extending the base component from here https://github.com/salesforce/base-components-recipes/tree/master/force-app/main/default/lwc/tree and adding custom css as needed

  • Thanks. This method works. Although I have seen in few places discouraging to do so in LWC.
    – Brav
    Commented Feb 28, 2020 at 20:38

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