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HTML

              
                <html>
    <head>
       <title>Circle menu</title>
       <meta charset="utf-8">
       <link href="https://fontastic.s3.amazonaws.com/A2hBXdKnfEcWoUCEX3Krsf/icons.css" rel="stylesheet">
    </head>
    <body>
        <nav class="circle-menu">
            <div class="center"></div>
            <ul>
                <li><a href="#" class="icon-gist-secret"><span class="segment"></span></a></li>
                <li><a href="#" class="icon-hubot"></a></li>
                <li><a href="#" class="icon-hourglass"></a></li>
                <li><a href="#" class="icon-light-bulb"></a></li>
                <li><a href="#" class="icon-squirrel"><span class="segment"></span></a></li>
                <li><a href="#" class="icon-law"></a></li>
            </ul>
        </nav>
    </body>
</html>
              
            
!

CSS

              
                html, body {
    margin: 0;
    padding: 0;
    background: #f5f5f5;
}

.circle-menu {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 50px auto;   
    background: white;
    box-shadow: 0 0 3px #ccc;
}

.circle-menu ul {
    position: absolute;
    width: 300px;
    height: 300px;
    margin: 50px;
    padding: 0;
    list-style: none;
    border-radius: 50%;                                   /*  THIS IS IMPORTANT  */
    overflow: hidden;                                     /*  THIS IS IMPORTANT  */
}

.circle-menu .center{
    position: absolute;
    top: 195px;
    left: 195px;
    z-index: 1000;
    border: 5px solid #34495e;
    border-radius: 50%;
    box-shadow: 0 0 3px #ccc;
}
                         /* Make each list item right corner to center of the menu */
.circle-menu li {
    position: absolute;
    top: -10px;                                            /*  THIS IS IMPORTANT  */
    left: -10px;                                           /*  THIS IS IMPORTANT  */ 
    width: 160px;
    height: 160px;
    transform-origin: 100% 100%;                           /*  THIS IS IMPORTANT  */
    overflow: hidden;                                      /*  THIS IS IMPORTANT  */
}
                            /*   rotate deg = 360deg / count-of-item  (360/6=60deg);
                                 skew deg = 90deg - [rotate deg] 
                                   each li rotate deg = rotate deg * li-number;
                            */
.circle-menu li:nth-child(1) {
    transform: rotate(0deg) skew(30deg);
}
.circle-menu li:nth-child(2) {
     transform: rotate(60deg) skew(30deg);
}
.circle-menu li:nth-child(3) {
    transform: rotate(120deg) skew(30deg);
}
.circle-menu li:nth-child(4) {
    transform: rotate(180deg) skew(30deg);
}
.circle-menu li:nth-child(5) {
    transform: rotate(240deg) skew(30deg);
}
.circle-menu li:nth-child(6) {
    transform: rotate(300deg) skew(30deg);
}
                                                          /* backflip content */
.circle-menu li a{
    display: block;
    width: 160px;
    height: 160px;
    margin-top: 40px;                                     /*  THIS IS IMPORTANT  */ 
    margin-left: 40px;                                    /*  THIS IS IMPORTANT  */ 
    background: rgba(241, 196, 15, 0.5) url('monitor-4x.png') no-repeat 50% 40%;
    transform: skew(-30deg) rotate(-60deg);               /*  THIS IS IMPORTANT  */ 
    transition: background-color 0.5s;
}

.circle-menu li:nth-child(even) a {
    background-color: rgba(241, 196, 15, 0.75);
}

.circle-menu li a:hover {
    background-color: rgba(241, 196, 15, 1);
}

/* Icons */

[class^="icon-"]:before {
    position: absolute;
    font-size: 3em;
    bottom: 50%;
    right: 35%;
    color: rgba(240, 240, 240, 1);
}


/* segments */
.segment {
  display: block;
  background: blue;
  width: 300px;
  height: 300px;
  border-radius: 300px;
  position: absolute;
  bottom: -150px;
  left: -70px;
  box-sizing: border-box;
  margin-left: -3px;
  margin-bottom: 5px;
  transform: translateY(0px); /* 50% or 150px to set sement to 0 */
}

/*
to move segment out of the pie you should do one of the folliwing steps:
  1.
    transform: translate(50px, 50px) rotate(240deg) skew(30deg); // move by translate
    position: fixed;
  2. (preferable way)
    ul { overflow: visible } // do not overflow li on moving outside of the pie
    ul li { margin-top: 0px; // move by margin top
    ul li a { background: none !important; }  // no background for not to see uncutted parts

to place segments correctly:
  1st segment takes 100% (translateY(0)) // 100 - 0 = 100px
  middle segment takes part which over the next segment (translateY(100px)) // 140 - 100 = 40px
  last segment represents a start segment from center of the pie translateY(140px)  // 10px
*/
              
            
!

JS

              
                
              
            
!
999px

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