CSS語法

//外部呼叫

<link rel=stylesheet type="text/css" href="my_css.css">

//宣告方法

元件標籤｛樣式性質：設定值｝

element｛property：value｝

<style type="text/css">

body{font-size:9pt}

</style>

//網頁div置中
<div style="margin: 0px auto;"></div>

Rails Bootstrap安裝

**GemFile內新增
gem 'bootstrap-sass'

**安裝
bundle install

**import bootstrap

**app/assets/stylesheets/application.css

@import "bootstrap-sprockets"; // 放 bootstrap 前

@import "bootstrap";

**修改副檔名成scss

app/assets/stylesheets/application.css

change to 

app/assets/stylesheets/application.scss

**加入javascript

**app/assets/javascripts/application.js

//= require jquery

//= require bootstrap-sprockets