Generated by SassMeister.com.

SassMeister-input.scss

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

// variables

//Colors
$white: #fff;
$black: #000000;
$red: #ff0000;

//Font Families
$arial: Arial, Helvetica, sans-serif;
$comic: "Comic Sans MS", cursive, sans-serif;

//////////Variables end/////////////

Parent Selector 

.entry {
  p {
    font-size: 2em;
    font-weight: 4em;
  }
  h1 {
    font-size: 4em;
    color: tomato;
  }
  a {
    text-decoration: none;
    color: $red;
    &:hover {
      text-decoration: underline;
      color: $black;
    }
  }
}
////////Nesting End///////////

SassMeister-output.css

Parent Selector
.entry p {
  font-size: 2em;
  font-weight: 4em;
}

Parent Selector
.entry h1 {
  font-size: 4em;
  color: tomato;
}

Parent Selector
.entry a {
  text-decoration: none;
  color: #ff0000;
}

Parent Selector
.entry a:hover {
  text-decoration: underline;
  color: #000000;
}