chore: add readme

Author: Jimco

packages/style/README.md

@@ -0,0 +1,31 @@
+# @milesight/responsive-style
+
+Responsive Style is a powerful yet easy-to-use CSS framework designed to help developers quickly build responsive websites. It provides a set of straightforward classes for creating flexible and scalable layouts.
+
+## Installation
+
+### 1. Using Package Managers
+
+Install with npm:
+
+```bash
+npm install @milesight/responsive-style
+```
+
+Install with yarn:
+
+```bash
+yarn add @milesight/responsive-style
+```
+
+### 2. Using Free CDN
+
+You can skip downloading files and directly use the compiled CSS via [jsDelivr](https://www.jsdelivr.com/):
+
+```html
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@milesight/responsive-style/dist/index.min.css">
+```
+
+## Usage
+
+Please refer to the [Usage Documentation](https://milesight-iot.github.io/responsive-toolkit/style/start/quick-start).