, , , html/css3, . /.
<span class="dot dot1"></span>
<span class="dot dot2"></span>
<span class="dot dot3"></span>
<span class="dot dot4"></span>
...
.dot {
display: inline-block;
width:12px;height:12px;
border-radius:6px;
background-color:#8999A6;
}
.page4 .dot4 {
background-color: white;
}
, , -, , . - , , . CSS, , , bg .