theme-css-guide

How to create custom themes based on the official Marpit theme CSS specification.

Skills
Creative design
1

What it does and how to use it

A skill that teaches Claude Code to do creative design tasks well. It is packaged knowledge the model uses whenever it is relevant.

Install the skill (command above).
In Claude Code, describe what you need - the skill turns on by itself when the context fits.
No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/theme-css-guide && curl -fsSL https://doutorai.pt/data/lib/skills__theme-css-guide.md -o .claude/skills/theme-css-guide/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

# Marp Theme CSS Creation Guide

How to create custom themes based on the official Marpit theme CSS specification.

Official documentation: https://marpit.marp.app/theme-css

## Basic Theme Structure

### @theme Metadata (Required)

Theme CSS requires `@theme` metadata:

```css
/* @theme theme-name */
```

Without this metadata, it won't be recognized as a theme.

### Basic Theme CSS Example

```css
/* @theme my-theme */

section {
  background-color: #fff;
  color: #333;
  font-size: 24px;
  padding: 60px;
}

h1 {
  color: #1e40af;
  font-size: 48px;
}

h2 {
  color: #3b82f6;
  font-size: 36p

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