A4-sized theme for Marp.
Add below into your VSCode setting.
"markdown.marp.themes": [
"https://raw.githubusercontent.com/pn11/marp-A4-theme/main/themes/A4.css",
],Specify the theme in your markdown header.
---
marp: true
theme: A4
---
# My slide
This is slide.See marp-team/marp-vscode#use-custom-theme for detail.