Generated by SassMeister.com.

SassMeister-input-HTML.html

<div class="col1">
  <h1>Main</h1>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsam, nesciunt, odio nemo doloremque maxime aperiam? Perferendis, odio, maxime, magnam accusantium provident veniam ea culpa cum suscipit illum non voluptatum quibusdam.</p>
</div>
<div class="col2">
  <h3>Something</h3>  
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsam, nesciunt, odio nemo doloremque maxime aperiam? Perferendis, odio, maxime, magnam accusantium provident veniam ea culpa cum suscipit illum non voluptatum quibusdam.</p>
</div>
  

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.5)
// Compass (v1.0.0.alpha.18)
// ----

body {
  background-color: #000;
  color: #fff;
  font: 1em/1.6em sans-serif ;
  margin: .5em;
}
.col1 {
  width: 68%; 
}
.col2 {
  width: 28%;
}
.col1, .col2 {
  float: left;
  margin-right: 2%;
}

SassMeister-output.css

body {
  background-color: #000;
  color: #fff;
  font: 1em/1.6em sans-serif;
  margin: .5em;
}

.col1 {
  width: 68%;
}

.col2 {
  width: 28%;
}

.col1, .col2 {
  float: left;
  margin-right: 2%;
}

SassMeister-rendered.html

<div class="col1">
  <h1>Main</h1>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsam, nesciunt, odio nemo doloremque maxime aperiam? Perferendis, odio, maxime, magnam accusantium provident veniam ea culpa cum suscipit illum non voluptatum quibusdam.</p>
</div>
<div class="col2">
  <h3>Something</h3>  
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsam, nesciunt, odio nemo doloremque maxime aperiam? Perferendis, odio, maxime, magnam accusantium provident veniam ea culpa cum suscipit illum non voluptatum quibusdam.</p>
</div>