Generated by SassMeister.com.

SassMeister-input-HTML.html

<div id="main-content">
    <ul>
		<li>phone-wide: green, 384px</li>
		<li>tablet-portrait: yellow, 480px to 600px</li>
		<li>tablet-landscape: red, 600px to 768px</li>
		<li>computer: purple, 768px to ?</li>
	</ul>
	<p>
	should turn green at 384px, doesn't change until 480px<br>
    should turn yellow at 480px, doesn't change until 600px<br>
    should turn red at 600px, doesn't change until 750px<br>
    should turn purple at 768px, doesn't change until 960px
	</p>
</div>

SassMeister-input.sass

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.7)
// ----

@import "compass"
@import "normalize-scss"
@import "susy"

$base-font-size: 100%
$relative-font-sizing: true

$em-base: 16px


$show-grid-backgrounds: true


$total-columns  : 5              // a 5-column, mobile-first grid
$column-width   : 4em            // each column is 4em wide (64px)
$gutter-width   : 1em            // 1em gutters between columns (16px)
$grid-padding   : 0  // grid-padding equal to gutters

$container-style: fluid

//alternative layout breakpoints

$susy-phone-wide:       24em 8       // 384px
$susy-tablet-portrait:  30em 12      // 480px to 600px
$susy-tablet-landscape: 37.5em 16    // 600px to 768px
$susy-computer:         48em 24      // 768px to ?



#main-content
  background-color: rgba(0, 150, 255, 0.6)
  border: 3px solid rgba(57, 102, 207, 0.7)
  border-top-width: 1px
  border-left-width: 1px
  min-height: 1000px
  +span-columns($total-columns omega,$total-columns, 1em)
  

// BREAKPOINTS

// 384px
+at-breakpoint($susy-phone-wide) 
  #main-content
    background: rgba(0, 255, 0, 0.6)
    
// 480px to 600px
+at-breakpoint($susy-tablet-portrait)
  #main-content
    background: rgba(255, 255, 0, 0.6)

// 600px to 768px
+at-breakpoint($susy-tablet-landscape)
  #main-content
    background: rgba(255, 0, 0, 0.9)

// 768px to ?
+at-breakpoint($susy-computer)
  #main-content
    background: rgba(255, 0, 255, 0.6)

SassMeister-output.css

/* normalize.css v2.1.2 | MIT License | git.io/normalize */
/* normalize.scss v2.1.2 | 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 styling not present in IE 8/9.
 */
[hidden] {
  display: none;
}

/* ==========================================================================
   Base
   ========================================================================== */
/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 * 3. Correct text resizing oddly in IE 6/7 when body `font-size` is set using
 *    `em` units.
 */
html {
  font-family: sans-serif;
  /* 1 */
  font-size: 100%;
  /* 3 */
  -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
   ========================================================================== */
/**
 * 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-family: 'courier new', monospace;
  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.
 * 2. Remove excess padding in IE 8/9.
 * 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;
}

#main-content {
  background-color: rgba(0, 150, 255, 0.6);
  border: 3px solid rgba(57, 102, 207, 0.7);
  border-top-width: 1px;
  border-left-width: 1px;
  min-height: 1000px;
  padding-left: 4.16667%;
  padding-right: 4.16667%;
  width: 91.66667%;
  float: right;
  margin-right: 0;
  *margin-left: -1em;
  display: inline;
}

@media (min-width: 24em) {
  #main-content {
    background: rgba(0, 255, 0, 0.6);
  }
}
@media (min-width: 30em) {
  #main-content {
    background: rgba(255, 255, 0, 0.6);
  }
}
@media (min-width: 37.5em) {
  #main-content {
    background: rgba(255, 0, 0, 0.9);
  }
}
@media (min-width: 48em) {
  #main-content {
    background: rgba(255, 0, 255, 0.6);
  }
}

SassMeister-rendered.html

<div id="main-content">
    <ul>
		<li>phone-wide: green, 384px</li>
		<li>tablet-portrait: yellow, 480px to 600px</li>
		<li>tablet-landscape: red, 600px to 768px</li>
		<li>computer: purple, 768px to ?</li>
	</ul>
	<p>
	should turn green at 384px, doesn't change until 480px<br>
    should turn yellow at 480px, doesn't change until 600px<br>
    should turn red at 600px, doesn't change until 750px<br>
    should turn purple at 768px, doesn't change until 960px
	</p>
</div>