Generated by SassMeister.com.

SassMeister-input-HTML.html

<div class="header">
  <h1 class="title title--primary">A website</h1>
  <p class="subtitle">Aenean lacinia bibendum nulla sed.</p>
</div>

<div class="contentBody">
  <div class="intro">
    <h2 class="title">The content</h2>
    <p>Aenean lacinia bibendum nulla sed consectetur. Nulla vitae elit libero, a pharetra augue. Sed posuere consectetur est at lobortis. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Donec ullamcorper nulla non metus auctor fringilla. Maecenas faucibus mollis interdum.</p>
  </div>

  <div class="block">
    <h3 class='title'>A block</h3>
    <p>Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum. Maecenas faucibus mollis interdum. Curabitur blandit tempus porttitor. Maecenas faucibus mollis interdum.</p>
  </div>

  <div class="block">
    <h3 class='title'>A block</h3>
    <p>Nullam quis risus eget urna mollis ornare vel eu leo. Maecenas faucibus mollis interdum. Integer posuere erat a ante venenatis dapibus posuere velit aliquet. Donec id elit non mi porta gravida at eget metus.</p>
  </div>

  <div class="block">
    <h3 class='title'>A block</h3>
    <p>Nullam quis risus eget urna mollis ornare vel eu leo. Maecenas faucibus mollis interdum. Integer posuere erat a ante venenatis dapibus posuere velit aliquet. Donec id elit non mi porta gravida at eget metus.</p>
  </div>
  
  <div class="footer">
    <p>Copyright A Website 2014</p>
  </div>
</div>

SassMeister-input.sass

// ----
// Sass (v3.3.0.rc.2)
// Compass (v1.0.0.alpha.17)
// Normalize SCSS (v3.0.0.alpha.1)
// ----

@import normalize-scss
@import compass

*
  &,
  &:before,
  &:after
    +box-sizing(border-box)

%reset,
p
  padding: 0
  margin: 0

%container
  width: 75vw
  margin: auto

%boxPadding
  padding: 5vw 2.5vw


body
  @extend %reset
  font-size: 1.25vw
  line-height: 1.75vw

.title
  @extend %reset
  font-size: 2.5vw
  line-height: 1
  
.title--primary
  font-size: 8vw

.subtitle
  font-size: 2vw

.header
  @extend %container
  @extend %boxPadding
  text-align: center
  background: rgba(black, .25)

.contentBody
  overflow: hidden
  @extend %container
  background: rgba(black, .1)

.intro
  @extend %boxPadding
  float: left
  background: rgba(white, .5)

.block
  float: left
  width: 25vw
  padding: 2.5vw

.footer
  float: left
  @extend %container
  padding: 2.5vw
  background: rgba(white, .5)

SassMeister-output.css

/* normalize.scss 3.0.0-alpha.1+normalize.2.1.3 | MIT/GPLv2 License | bit.ly/normalize-with-compass */
/* ==========================================================================
   HTML5 display definitions
   ========================================================================== */
/**
 * Correct `block` display not defined in IE 8/9.
 */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
nav,
section,
summary {
  display: block;
}

/**
 * Correct `inline-block` display not defined in IE 8/9.
 */
audio,
canvas,
video {
  display: inline-block;
  *display: inline;
  *zoom: 1;
}

/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */
audio:not([controls]) {
  display: none;
  height: 0;
}

/**
 * Address `[hidden]` styling not present in IE 8/9.
 * Hide the `template` element in IE, Safari, and Firefox < 22.
 */
[hidden],
template {
  display: none;
}

/* ==========================================================================
   Base
   ========================================================================== */
/**
 * Establish a vertical rhythm unit using $base-font-size, $base-line-height,
 * and $rhythm-unit variables. Also, correct text resizing oddly in IE 6/7 when
 * body `font-size` is set using `em` units.
 */
html {
  font-size: 100%;
  line-height: 1.5em;
}

/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 */
html {
  font-family: sans-serif;
  /* 1 */
  -ms-text-size-adjust: 100%;
  /* 2 */
  -webkit-text-size-adjust: 100%;
  /* 2 */
}

/**
 * Address `font-family` inconsistency between `textarea` and other form
 * elements.
 */
button,
input,
select,
textarea {
  font-family: sans-serif;
}

/**
 * Remove default margin.
 */
body {
  margin: 0;
}

/* ==========================================================================
   Links
   ========================================================================== */
/**
 * Remove the gray background color from active links in IE 10.
 */
a {
  background: transparent;
}

/**
 * Address `outline` inconsistency between Chrome and other browsers.
 */
a:focus {
  outline: thin dotted;
}

/**
 * Improve readability when focused and also mouse hovered in all browsers.
 */
a:active,
a:hover {
  outline: 0;
}

/* ==========================================================================
   Typography
   ========================================================================== */
/**
 * Set 1 unit of vertical rhythm on the top and bottom margin.
 */
p,
pre {
  margin: 1.5em 0;
}

blockquote {
  /* Set 1 unit of vertical rhythm on the top and bottom margin. */
  margin: 1.5em 40px;
}

/**
 * Address variable `h1` font-size and margin within `section` and `article`
 * contexts in Firefox 4+, Safari 5, and Chrome.
 */
h1 {
  /* Set the font-size and line-height while keeping a proper vertical rhythm. */
  font-size: 2em;
  line-height: 1.5em;
  /* Set 1 unit of vertical rhythm on the top and bottom margins. */
  margin-top: 0.75em;
  margin-bottom: 0.75em;
}

h2 {
  font-size: 1.5em;
  line-height: 2em;
  margin-top: 1em;
  margin-bottom: 1em;
}

h3 {
  font-size: 1.17em;
  line-height: 1.28205em;
  margin-top: 1.28205em;
  margin-bottom: 1.28205em;
}

h4 {
  font-size: 1em;
  line-height: 1.5em;
  margin-top: 1.5em;
  margin-bottom: 1.5em;
}

h5 {
  font-size: 0.83em;
  line-height: 1.80723em;
  margin-top: 1.80723em;
  margin-bottom: 1.80723em;
}

h6 {
  font-size: 0.67em;
  line-height: 2.23881em;
  margin-top: 2.23881em;
  margin-bottom: 2.23881em;
}

/**
 * Address styling not present in IE 8/9, Safari 5, and Chrome.
 */
abbr[title] {
  border-bottom: 1px dotted;
}

/**
 * Address style set to `bolder` in Firefox 4+, Safari 5, and Chrome.
 */
b,
strong {
  font-weight: bold;
}

/**
 * Address styling not present in Safari 5 and Chrome.
 */
dfn {
  font-style: italic;
}

/**
 * Address differences between Firefox and other browsers.
 */
hr {
  -moz-box-sizing: content-box;
  -webkit-box-sizing: content-box;
  box-sizing: content-box;
  height: 0;
}

/**
 * Address styling not present in IE 8/9.
 */
mark {
  background: #ff0;
  color: #000;
}

/**
 * Correct font family set oddly in Safari 5 and Chrome.
 */
code,
kbd,
pre,
samp {
  font-family: monospace, serif;
  font-size: 1em;
}

/**
 * Improve readability of pre-formatted text in all browsers.
 */
pre {
  white-space: pre;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/**
 * Set consistent quote types.
 */
q {
  quotes: "\201C" "\201D" "\2018" "\2019";
}

/**
 * Address inconsistent and variable font size in all browsers.
 */
small {
  font-size: 80%;
}

/**
 * Prevent `sub` and `sup` affecting `line-height` in all browsers.
 */
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

/* ==========================================================================
   Lists
   ========================================================================== */
/**
 * Address margins set differently in IE 6/7.
 */
dl,
menu,
ol,
ul {
  margin: 1.5em 0;
}

dd {
  margin: 0 0 0 40px;
}

/**
 * Address paddings set differently in IE 6/7.
 */
menu,
ol,
ul {
  padding: 0 0 0 40px;
}

/**
 * Correct list images handled incorrectly in IE 7.
 */
nav ul,
nav ol {
  list-style: none;
  list-style-image: none;
}

/* ==========================================================================
   Embedded content
   ========================================================================== */
/**
 * Remove border when inside `a` element in IE 8/9.
 */
img {
  border: 0;
  /* Improve image quality when scaled in IE 7. */
  -ms-interpolation-mode: bicubic;
}

/**
 * Correct overflow displayed oddly in IE 9.
 */
svg:not(:root) {
  overflow: hidden;
}

/* ==========================================================================
   Figures
   ========================================================================== */
/**
 * Address margin not present in IE 8/9 and Safari 5.
 */
figure {
  margin: 0;
}

/* ==========================================================================
   Forms
   ========================================================================== */
/**
 * Correct margin displayed oddly in IE 6/7.
 */
form {
  margin: 0;
}

/**
 * Define consistent border, margin, and padding.
 */
fieldset {
  margin: 0 2px;
  /* Apply borders and padding that keep the vertical rhythm. */
  border-color: #c0c0c0;
  border-top-width: 0.0625em;
  border-top-style: solid;
  padding-top: 0.4625em;
  border-bottom-width: 0.0625em;
  border-bottom-style: solid;
  padding-bottom: 0.9125em;
  border-left-width: 0.0625em;
  border-left-style: solid;
  padding-left: 0.875em;
  border-right-width: 0.0625em;
  border-right-style: solid;
  padding-right: 0.875em;
}

/**
 * 1. Correct `color` not being inherited in IE 8/9.
 * 2. Remove padding so people aren't caught out if they zero out fieldsets.
 * 3. Correct alignment displayed oddly in IE 6/7.
 */
legend {
  border: 0;
  /* 1 */
  padding: 0;
  /* 2 */
  *margin-left: -7px;
  /* 3 */
}

/**
 * 1. Correct font family not being inherited in all browsers.
 * 2. Correct font size not being inherited in all browsers.
 * 3. Address margins set differently in Firefox 4+, Safari 5, and Chrome.
 * 4. Improve appearance and consistency with IE 6/7.
 */
button,
input,
select,
textarea {
  font-family: inherit;
  /* 1 */
  font-size: 100%;
  /* 2 */
  margin: 0;
  /* 3 */
  vertical-align: baseline;
  /* 4 */
  *vertical-align: middle;
  /* 4 */
}

/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */
button,
input {
  line-height: normal;
}

/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Chrome, Safari 5+, and IE 8+.
 * Correct `select` style inheritance in Firefox 4+ and Opera.
 */
button,
select {
  text-transform: none;
}

/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 * 4. Remove inner spacing in IE 7 without affecting normal text inputs.
 *    Known issue: inner spacing remains in IE 6.
 */
button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button;
  /* 2 */
  cursor: pointer;
  /* 3 */
  *overflow: visible;
  /* 4 */
}

/**
 * Re-set default cursor for disabled elements.
 */
button[disabled],
html input[disabled] {
  cursor: default;
}

/**
 * 1. Address box sizing set to `content-box` in IE 8/9/10.
 * 2. Remove excess padding in IE 8/9/10.
 * 3. Remove excess padding in IE 7.
 *    Known issue: excess padding remains in IE 6.
 */
input[type="checkbox"],
input[type="radio"] {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  /* 1 */
  padding: 0;
  /* 2 */
  *height: 13px;
  /* 3 */
  *width: 13px;
  /* 3 */
}

/**
 * 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome
 *    (include `-moz` to future-proof).
 */
input[type="search"] {
  -webkit-appearance: textfield;
  /* 1 */
  -moz-box-sizing: content-box;
  -webkit-box-sizing: content-box;
  box-sizing: content-box;
  /* 2 */
}

/**
 * Remove inner padding and search cancel button in Safari 5 and Chrome
 * on OS X.
 */
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

/**
 * Remove inner padding and border in Firefox 4+.
 */
button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}

/**
 * 1. Remove default vertical scrollbar in IE 8/9.
 * 2. Improve readability and alignment in all browsers.
 */
textarea {
  overflow: auto;
  /* 1 */
  vertical-align: top;
  /* 2 */
}

/* ==========================================================================
   Tables
   ========================================================================== */
/**
 * Remove most spacing between table cells.
 */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

*, *:before, *:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

body, .title,
p {
  padding: 0;
  margin: 0;
}

.header, .contentBody, .footer {
  width: 75vw;
  margin: auto;
}

.header, .intro {
  padding: 5vw 2.5vw;
}

body {
  font-size: 1.25vw;
  line-height: 1.75vw;
}

.title {
  font-size: 2.5vw;
  line-height: 1;
}

.title--primary {
  font-size: 8vw;
}

.subtitle {
  font-size: 2vw;
}

.header {
  text-align: center;
  background: rgba(0, 0, 0, 0.25);
}

.contentBody {
  overflow: hidden;
  background: rgba(0, 0, 0, 0.1);
}

.intro {
  float: left;
  background: rgba(255, 255, 255, 0.5);
}

.block {
  float: left;
  width: 25vw;
  padding: 2.5vw;
}

.footer {
  float: left;
  padding: 2.5vw;
  background: rgba(255, 255, 255, 0.5);
}

SassMeister-rendered.html

<div class="header">
  <h1 class="title title--primary">A website</h1>
  <p class="subtitle">Aenean lacinia bibendum nulla sed.</p>
</div>

<div class="contentBody">
  <div class="intro">
    <h2 class="title">The content</h2>
    <p>Aenean lacinia bibendum nulla sed consectetur. Nulla vitae elit libero, a pharetra augue. Sed posuere consectetur est at lobortis. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Donec ullamcorper nulla non metus auctor fringilla. Maecenas faucibus mollis interdum.</p>
  </div>

  <div class="block">
    <h3 class='title'>A block</h3>
    <p>Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum. Maecenas faucibus mollis interdum. Curabitur blandit tempus porttitor. Maecenas faucibus mollis interdum.</p>
  </div>

  <div class="block">
    <h3 class='title'>A block</h3>
    <p>Nullam quis risus eget urna mollis ornare vel eu leo. Maecenas faucibus mollis interdum. Integer posuere erat a ante venenatis dapibus posuere velit aliquet. Donec id elit non mi porta gravida at eget metus.</p>
  </div>

  <div class="block">
    <h3 class='title'>A block</h3>
    <p>Nullam quis risus eget urna mollis ornare vel eu leo. Maecenas faucibus mollis interdum. Integer posuere erat a ante venenatis dapibus posuere velit aliquet. Donec id elit non mi porta gravida at eget metus.</p>
  </div>
  
  <div class="footer">
    <p>Copyright A Website 2014</p>
  </div>
</div>