grid.css

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

html {
  font: 112%/1.5 "Open Sans", sans-serif;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: #fff;
  color: #555;
}

.container {
  margin: 0 auto;
  max-width: 1000px;
  width: 90%;
}

/* Header
-------------------------------------------------------------- */
header {
  background: #ec6f66;
  color: #555;
  overflow: hidden;
  text-align: center;
}

.intro {
  margin: 4rem 0;
}

header h1 {
  border: 3px solid #fff;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  border-radius: 3px;
  color: #fff;
  padding: .4rem .6rem;
  display: inline-block;
  font-size: 1.8rem;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

header p {
  color: rgba(255,255,255,0.7);
  margin: 0 auto;
}

header a {
  color: rgba(255,255,255,0.9);
  text-decoration: underline;
}

header a:hover {
  text-decoration: none;
}

header img {
  margin: 0 auto;
}

/* Section
-------------------------------------------------------------- */
section {
  border-top: 1px solid #eee;
  text-align: center;
  padding: 4rem 0;
}

section:first-of-type {
  border-top: none;
}

section.resources {
  text-align: left:
}

.example {
  border-top: none;
  background: #ec6f66;
  color: #fff;
}

.example p {
  color: rgba(255,255,255,0.7);
}

.example img {
  margin: 0;
}

.fragmentation {
  background-image: url("/images/grid/fragmentation.png");
  background-size: cover;
  min-height: 500px;
}

/* Grid
-------------------------------------------------------------- */
.column {
  float: left;
  margin-left: 5%;
}

.column:first-child {
  margin-left: 0;
}

.column.full {
  width: 100%;
}

.column.two-thirds {
  width: 65%;
}

.column.half {
  width: 47.5%;
}

.column.one-third {
  width: 30%;
}

.column.one-fourth {
  width: 21.25%;
}

/* Typography
-------------------------------------------------------------- */
h1, h2, h3, h4, h5 {
  font-weight: 600;
  margin: 0;
}

h1 {
  font-size: 1.5rem;
  line-height: 1.3em;
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: .5rem;
}

p {
  color: #999;
  margin: 0 auto;
  max-width: 30rem;
}

em {
  font-style: italic;
}

code {
  background-color: #f8f8f8;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  border-radius: 3px;
  border: 1px solid #ddd;
  font-family: Consolas, "Liberation Mono", Courier, monospace;
  font-size: 0.8rem;
  padding: 0.1rem 0.3rem;
  position: relative;
  top: -1px;
  white-space: nowrap;
}

ul {
  display: inline-block;
  margin: 0;
  text-align: left;
}

/* Links
-------------------------------------------------------------- */
a {
  color: #ec6f66;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Elements
-------------------------------------------------------------- */
hr {
  border: 0;
  border-top: 1px solid #ddd;
  margin: 2em auto;
  width: 3rem;
}

hr.small {
  margin: 1.5em auto;
}

.circle {
  border: 3px solid #555;
  border-radius: 50%;
  -moz-border-radius: 50%;
  -webkit-border-radius: 50%;
  color: #555;
  display: block;
  font-size: 1.7rem;
  font-weight: 600;
  height: 3.2rem;
  line-height: 1.7em;
  margin: 0 auto 1rem auto;
  text-align: center;
  width: 3.2rem;
}

img {
  display: block;
  height: auto;
  margin: 0 auto 1.5rem auto;
  width: 100%;
}

.rwd {
  margin: 0 auto 1.5em auto;
  max-width: 380px;
}

/* Box Model
-------------------------------------------------------------- */
.box-model h1 { margin-bottom: 3rem; }

.margin { color: #f9cd9d; }
.border { color: #fce08f; }
.padding { color: #c2ddb6; }
.content { color: #9ec3e5; }

/* Grid
-------------------------------------------------------------- */
.grid {
  text-align: center;
}

.grid span {
  font-size: 0.9em;
  font-weight: 600;
}

.grid .container {
  border: 2px dashed rgba(255,255,255,0.3);
  padding: 2em;
}

.grid .row {
  overflow: hidden;
  margin-top: 1.5em;
}

.grid .row:first-child {
  margin-top: 0;
}

.grid .column {
  border: 2px solid #fff;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  background: rgba(225,255,255,0.1);
  padding: 1.5em;
}

/* Grid Row Example
-------------------------------------------------------------- */
.row-example .container{
  border: 2px dashed rgba(255,255,255,0.2);
  padding: 2em;
}

.row-example .row {
  background: rgba(225,255,255,0.1);
  border: 2px dashed #fff;
  padding: 2em;
}

/* Grid Mobile
-------------------------------------------------------------- */
.mobile-background {
  background-image: url("/images/grid/mobile.png");
  background-size: 286px 600px;
  width: 286px;
  height: 600px;
  margin: 0 auto;
}

.container.mobile {
  border: none;
  max-width: 320px;
  padding: 106px 24px 0;
}

.container.mobile .row {
  margin: 0;
}

.container.mobile .column {
  margin: 0 0 18px 0;
  padding: 16.5px;
  width: 100%;
}

/* Gist Overrides
-------------------------------------------------------------- */
.gist .gist-file {
  font-size: .9rem !important;
  margin: 0 auto;
  max-width: 750px;
  overflow: hidden !important;
  text-align: left;
}

.gist .gist-file .gist-data {
  background: #f8f8f8 !important;
  border-bottom: none !important;
}

.gist .gist-file .gist-meta {
  display: none !important;
}

.gist-syntax .k {
  color: #555 !important;
  font-weight: normal !important;
}

/* animate.css by Daniel Eden
-------------------------------------------------------------- */
.animated{-webkit-animation-fill-mode:both;-moz-animation-fill-mode:both;-ms-animation-fill-mode:both;-o-animation-fill-mode:both;animation-fill-mode:both;-webkit-animation-duration:2s;-moz-animation-duration:2s;-ms-animation-duration:2s;-o-animation-duration:2s;animation-duration:2s;}.animated.hinge{-webkit-animation-duration:2s;-moz-animation-duration:2s;-ms-animation-duration:2s;-o-animation-duration:2s;animation-duration:2s;}@-webkit-keyframes fadeInUp {
  0% {
    opacity: 0;
    -webkit-transform: translateY(20px);
  } 100% {
    opacity: 1;
    -webkit-transform: translateY(0);
  }
}

@-moz-keyframes fadeInUp {
  0% {
    opacity: 0;
    -moz-transform: translateY(20px);
  }

  100% {
    opacity: 1;
    -moz-transform: translateY(0);
  }
}

@-o-keyframes fadeInUp {
  0% {
    opacity: 0;
    -o-transform: translateY(20px);
  }

  100% {
    opacity: 1;
    -o-transform: translateY(0);
  }
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.fadeInUp {
  -webkit-animation-name: fadeInUp;
  -moz-animation-name: fadeInUp;
  -o-animation-name: fadeInUp;
  animation-name: fadeInUp;
}

/*  #Clearfix
-------------------------------------------------------------- */
.container:before,
.container:after,
.row:before,
.row:after,
.cf:before,
.cf:after {
  content: " ";
  display: table;
}

.container:after,
.row-example:after,
.cf:after {
  clear: both;
}

.container,
.row-example,
.cf {
  *zoom: 1;
}

/* Media Queries
-------------------------------------------------------------- */
@media screen and (max-width: 640px) {
  html { font-size: 100%; }
  section { padding: 2rem 0; }
  hr { margin: 2rem auto; }
  .intro { margin: 2rem 0; }
  .fragmentation { min-height: 250px; }

  .column.full,
  .column.two-thirds,
  .column.half,
  .column.one-third,
  .column.one-fourth {
    margin: 2em 0 0 0;
    width: 100%;
  }

  .column:first-child { margin-top: 0; }
  .container.mobile .column { padding: 18px; }
}