Create custom expand all/ collapse all for accordion section rows table based in lightning component | how to create expand/collapse in lightning component Salesforce
Trouble Aligning a label and Box in the center of my VF page. Also make Label appear next to rather than on top of box - Salesforce Developer Community
Panels - Lightning Design System
lightning - New SLDS class and attribute as of Spring '18 release - no documentation - Salesforce Stack Exchange