Using CSS and UniCode symbols

index.html

<h1>Document icons</h1>
<h2>Using CSS and UniCode symbols</h2>
<div class="box">
  <div class="icon blue">
    <span class="doc-icon doc">☰</span>
    <span class="doc-type">DOC</span>
  </div>
  <div class="icon turquoise">
    <span class="doc-icon code">❮ ❯</span>
    <span class="doc-type">HTML</span>
  </div>
  <div class="icon darkgreen">
    <span class="doc-icon spread">⊟</span>
    <span class="doc-type">XLS</span>
  </div>
  <div class="icon lightgreen">
    <span class="doc-icon zip">⊡</span>
    <span class="doc-type">ZIP</span>
  </div>
  <div class="icon yellow">
    <span class="doc-icon misc">☺</span>
    <span class="doc-type">LOL</span>
  </div>
  <div class="icon orange">
    <span class="doc-icon ptt">⧉</span>
    <span class="doc-type">PTT</span>
  </div>
  <div class="icon red">
    <span class="doc-icon pdf">☷</span>
    <span class="doc-type">PDF</span>
  </div>
</div>

style.css

@import url(http://fonts.googleapis.com/css?family=Open+Sans:300);
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Open Sans', sans-serif;
}

h1, h2 {
  font-weight: normal;
  text-align: center;
}

h1 {
  font-size: 32px;
  color: #A1A2A3;
  margin-top: 60px;
}

h2 {
  font-size: 24px;
  color: #C1C2C3;
  margin-bottom: 20px;
}

.box {
  width: 640px;
  height: 300px;
  margin: 0 auto;
  padding-left: 40px;
}
.icon {
  display: inline-block;
  position: relative;
  width: 40px;
  height: 50px;
  margin-top: 40px;
  background-color: #E1E2E3;
  font-family: arial;
}
.icon:before {
  width: 0;
  height: 40px;
  border-left: 10px solid #E1E2E3;
  border-top: 10px solid transparent;
  position: absolute;
  content: "";
  top: 0px;
  right: -10px;
}
.icon:after {
  width: 0; 
  height: 0;
  border-right: 10px solid transparent;
  border-bottom: 10px solid rgba(0,0,0,.3);
  position: absolute;
  content: "";
  top: 0px;
  right: -10px;
}
.doc-type {
  position: absolute;
  bottom: 0;
  width: 50px;
  height: 16px;
  font-size: 10px;
  text-transform: uppercase;
  text-align: center;
  line-height: 10px;
  color: #FFF;
}
.doc-icon {
  position: absolute;
  top: 10px;
  width: 50px;
  height: 20px;
  font-size: 20px;
  text-align: center;
  line-height: 20px;
  color: #FFF;
}

.icon.blue { background-color: #119EF6; z-index: 7; }
.icon.blue:before { border-left-color: #119EF6; }

.doc-icon.doc { font-size: 16px; line-height: 22px; }

.icon.turquoise { background-color: #009999;  z-index: 6; }
.icon.turquoise:before { border-left-color: #009999; }

.doc-icon.code { font-size: 13px; line-height: 24px;}

.icon.darkgreen { background-color: #33C36B;  z-index: 5; }
.icon.darkgreen:before { border-left-color: #33C36B; }

.doc-icon.spread { font-size: 20px; line-height: 21px; }

.icon.lightgreen { background-color: #99CC00;  z-index: 4; }
.icon.lightgreen:before { border-left-color: #99CC00; }

.doc-icon.zip { font-size: 20px; line-height: 21px; }

.icon.yellow { background-color: #F1B705;  z-index: 3; }
.icon.yellow:before { border-left-color: #F1B705; }

.doc-icon.misc { font-size: 22px; line-height: 20px; }

.icon.orange { background-color: #FF7C14; z-index: 2; }
.icon.orange:before { border-left-color: #FF7C14; }

.doc-icon.ptt { font-size: 18px; line-height: 22px; }

.icon.red { background-color: #DE4206; z-index: 1; }
.icon.red:before { border-left-color: #DE4206; }

.doc-icon.pdf { font-size: 16px; line-height: 22px; }

.icon {
  animation-name: open;
  animation-fill-mode: forwards;
  animation-duration: .8s;
  animation-iteration-count: 1;   
}

@-webkit-keyframes open {
  0%   { margin-right: -40px; }
  100% { margin-right: 40px; }
}