fonteva-design-guide/force-app/main/default/lwc/pfmSpacer/pfmSpacer.js

## Dev, Build and Test

import { LightningElement, api, track } from 'lwc';
import BASE from '@salesforce/resourceUrl/PFM_Portal';

export default class PfmSpacer extends LightningElement {
    @track spacerUrl;
    @api width = 'auto';
    @api height = 'auto';
    connectedCallback() {
        this.spacerUrl = BASE + '/img/spacer.png';
    }
}