Edit in JSFiddle

<div class="wrap">
    <div class="circle one">
        <div class="circle two">
            <div class="circle three"></div>
        </div>
    </div>
</div>

.wrap {
    background: #fff;
    width:200px;
    height: 200px;
    position:absolute;
    left:25%;
    top:25%;
}
.circle {
    border-radius: 50%;
    border:1px solid #000;
}
.one {
    width: 200px;
    height: 200px;
    position:relative;
}
.two {
    width: 50%;
    height: 50%;
    position: absolute;
    left:25%;
    top:25%;
}
.three {
    width: 50%;
    height: 50%;
    position: absolute;
    left:25%;
    top:25%;
}