<%= stylesheet_link_tag "application", :media => "all" %>

我在 layout 中把这句话去掉，然后背景图片就不显示了。。。 我主要不想加载那些多余的 css...

我后来在 stylesheets 文件夹里建了个 xxx.css，里面是： /*

• This is a manifest file that'll be compiled into application.css, which will include all the files
• listed below. *
• Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
• or vendor/assets/stylesheets of plugins, if any, can be referenced here using a relative path. *
• You're free to add application-wide styles to this file and they'll appear at the top of the
• compiled file, but it's generally better to create a new file per style scope. * *= require_self */

然后在 layout 文件中这样用： <%= stylesheet_link_tag "xxx", :media => "all" %>

多余的 css 没了，但是我的 div 的 background-image 也没了。。。 求大神解答