Generated by SassMeister.com.

SassMeister-input-HTML.html

<main>Main</main>

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----


body {

  main {
      display: block;
      width: 80%;
      height: 30px;
      margin: 0 auto;
      background-color: lightblue;
      
      @at-root {
        body {
          background-color: green;
        }
      }
  }
  
}

SassMeister-output.css

body main {
  display: block;
  width: 80%;
  height: 30px;
  margin: 0 auto;
  background-color: lightblue;
}

body {
  background-color: green;
}

SassMeister-rendered.html

<main>Main</main>