Embed
Add Embed from the + panel and paste embed code into the HTML field.
Most sites that offer an “embed” or “share” option give you an iframe you can paste straight in: a YouTube video, a Google Map, a calendar, a chart, a music player.
Settings
Section titled “Settings”The embed code. It takes raw HTML, not just iframes, so simple markup works too.
Show Card
Section titled “Show Card”A card behind the embed, on by default.
Sizing
Section titled “Sizing”Give the embed widget the size you want the content to be. Many embed codes carry their own fixed width and height. If the content will not fill the widget, edit those numbers in the pasted code.