Instructions for creating a bone shape:
View Demo
HTML
<div class="bone">
<div class="s1"></div>
<div class="s2"></div>
<div class="s3"></div>
<div class="s4"></div>
<div class="centerbone">
<div class="clean"></div>
</div>
</div>
CSS
.bone{
position: relative;
width: 600px;
}
.s1, .s2, .s3, .s4{
background:#fff;
height: 200px;
width: 200px;
border: 5px solid #000;
border-radius: 200px;
position:absolute;
}
.s1{
left: 0;
}
.s2{
right: 0;
}
.s3{
top: 205px;
}
.s4{
right: 0;
top:205px;
}
.centerbone{
background:#fff;
height: 250px;
width: 188px;
border: 5px solid #000;
position:absolute;
left: 205px;
top: 78px;
border-width: 5px 0 5px;
}
.clean{
background:#fff;
width: 400px;
height:100%;
position: absolute;
left:-104px;
}
For creating a hexagon grid, you can refer to this tutorial: