Showing posts with label CSS. Show all posts
Showing posts with label CSS. Show all posts

Saturday, July 13, 2019

LWC: Override CSS of standard Lightning Web Components

Recently, I got a requirement where I had to override the CSS of lightning-card component, specifically to change the background colour of the header of the card component.

Shadow Dom have their own little kingdom and cannot be styled from outside, except if they would provide some options to do so. Currently, it's not possible to style standard Lightning Web Components;

I am providing a hacky workaround to get the desired results. I added the below code in my helloExpressions component:
renderedCallback() {
    const style = document.createElement('style');
    style.innerText = `c-hello-expressions .slds-card__header {
    background-color: #54C2B2;
    }`;
    this.template.querySelector('lightning-card').appendChild(style);
}

and this is how it looks:

UPDATE:
It seems there is a cleaner approach as suggested by pdebaty: loading CSS using loadStyle...lol. You can go through the StackExchange article to understand more in details.


Share This:    Facebook Twitter

Total Pageviews

My Social Profiles

View Sonal's profile on LinkedIn

Tags

__proto__ $Browser Access Grants Accessor properties Admin Ajax AllowsCallouts Apex Apex Map Apex Sharing AssignmentRuleHeader AsyncApexJob Asynchronous Auth Provider AWS Callbacks Connected app constructor Cookie CPU Time CSP Trusted Sites CSS Custom settings CustomLabels Data properties Database.Batchable Database.BatchableContext Database.query Describe Result Destructuring Dynamic Apex Dynamic SOQL Einstein Analytics enqueueJob Enterprise Territory Management Enumeration escapeSingleQuotes featured Flows geolocation getGlobalDescribe getOrgDefaults() getPicklistValues getRecordTypeId() getRecordTypeInfosByName() getURLParameters Google Maps Governor Limits hasOwnProperty() Heap Heap Size IIFE Immediately Invoked Function Expression Interview questions isCustom() Javascript Javascript Array jsForce Lightning Lightning Components Lightning Events lightning-record-edit-form lightning:combobox lightning:icon lightning:input lightning:select LockerService Lookup LWC Manual Sharing Map Modal Module Pattern Named Credentials NodeJS OAuth Object.freeze() Object.keys() Object.preventExtensions() Object.seal() Organization Wide Defaults Override PDF Reader Performance performance.now() Permission Sets Picklist Platform events Popup Postman Primitive Types Profiles Promise propertyIsEnumerable() prototype Query Selectivity Queueable Record types Reference Types Regex Regular Expressions Relationships Rest API Rest Operator Revealing Module Pattern Role Hierarchy Salesforce Salesforce Security Schema.DescribeFieldResult Schema.DescribeSObjectResult Schema.PicklistEntry Schema.SObjectField Schema.SObjectType Security Service Components Shadow DOM Sharing Sharing Rules Singleton Slots SOAP API SOAP Web Services SOQL SOQL injection Spread Operator Star Rating stripInaccessible svg svgIcon Synchronous this Token Triggers uiObjectInfoApi Upload Files VSCode Web Services XHR
Scroll To Top