CSS Chrome browser box

by PhilQ

HTML

<div class="browser">
    <div class="title">
        <span class="red"></span>
        <span class="orange"></span>
        <span class="green"></span>
        <span class="text" style="display: none;"></span>
        <div class="tab"><div class="tab-box"></div></div>
        <div class="tab active" style="display: none;"><div class="tab-box"></div></div>
    </div>
    <div class="subtitle"></div>
    <div class="content"></div>
</div>
<br />
<br />
<br />
<br />
<div class="magnifying-glass"></div>

CSS

* {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}
body {
    margin: 20px;
    background-color: #ddd;
}
.browser {
    display: block;
    width: 500px;
    border-radius: 6px;
    -moz-border-radius: 6px;
    -webkit-border-radius: 6px;
    box-shadow: 0px 1px 25px 0px rgba(0,0,0, 0.5);
    -moz-box-shadow: 0px 1px 25px 0px rgba(0,0,0, 0.5);
    -webkit-box-shadow: 0px 1px 25px 0px rgba(0,0,0, 0.5);
    overflow: hidden;
}
.browser .title {
    width: 100%;
    height: 28px;
    display: block;
    padding-left: 11px;
    background-color: #1c1e22;
    border-top-left-radius: 6px;
    -moz-border-top-left-radius: 6px;
    -webkit-border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    -moz-border-top-right-radius: 6px;
    -webkit-border-top-right-radius: 6px;
}
.browser .title span {
    display: block;
    float: left;
    margin-top: 12px;
    margin-right: 4px;
    border-radius: 50%;
    -moz-border-radius: 50%;
    -webkit-border-radius: 50%;
    width: 8px;
    height: 8px;
    box-shadow: 0 0 2px 0px rgba(0,0,0, 1), inset 1px 1px 0px 0px rgba(255,255,255, 0.3);
}
.red {
    background-color: #f27058;
}
.orange {
    background-color: #dcab5b;
}
.green {
    background-color: #87b345;
}
.browser .title span.text {
    display: block;
    float: left;
    margin-top: 6px;
    margin-left: 3px;
    width: 416px;
    height: 17px;
    background-color: #b6b6b6;
}

.tab {
  width:200px;
  height:22px;
  overflow:hidden;
  float:left;
  margin:6px -10px 0 0;
}
.tab-box {
  height:28px;
  background: #424242;
  border-radius: 3px;
  border:0px solid rgba(255,255,255, 0.1);
  margin:0 5px 0;
  box-shadow: 0 0 2px rgba(0,0,0, 1), inset 1px 1px 0px 0px rgba(255,255,255, 0.1);
 transform: perspective(100px) rotateX(18deg);
 -webkit-transform: perspective(100px) rotateX(18deg);
 -moz-transform: perspective(100px) rotateX(18deg);
  
}
.tab.active {
  z-index:40;
 ...