18                     <div id="bubble1"></div>
19                     <div id="bubble2"></div>
20                     <div id="bubble3"></div>



 26 #bubble1,#bubble2,#bubble3 {
 27         display: block;
 28         width: 70px;
 29         height: 70px;
 30         margin-left: -90px;
 31         margin-top: auto;
 32         background-color: red;
 33         border-radius: 50%;
 34 }