Take a look at <polymer-grid> and <polymer-flex-layout> https://github.com/Polymer/polymer-elements/tree/stable/polymer-grid-layout https://github.com/Polymer/

Take a look at <polymer-grid> and <polymer-flex-layout> https://github.com/Polymer/polymer-elements/tree/stable/polymer-grid-layout https://github.com/Polymer/polymer-elements/tree/stable/poly... https://github.com/Polymer/polymer-elements/tree/stable/polymer-flex-layout https://github.com/Polymer/polymer-elements/tree/stable/poly...