.beaker{position:relative;display:block;width:426px;height:593px;margin:0 auto;background:url("../images/beaker.png") no-repeat}.footer{text-align:center}.bubble{position:absolute;display:block;width:50px;height:50px;border:10px solid #59b300;background-color:#7fff00;border-radius:50%;-webkit-animation-name:fly-bubble;animation-name:fly-bubble;-webkit-animation-duration:8s;animation-duration:8s;-webkit-animation-iteration-count:infinite;animation-iteration-count:infinite;-webkit-animation-timing-function:linear;animation-timing-function:linear}@-webkit-keyframes fly-bubble{from{bottom:0;-webkit-transform:scale(0.1);transform:scale(0.1)}50%{bottom:80px;opacity:0.4;-webkit-transform:scale(0.5);transform:scale(0.5)}to{bottom:160px;opacity:0;-webkit-transform:scale(0.3);transform:scale(0.3)}}@keyframes fly-bubble{from{bottom:0;-webkit-transform:scale(0.1);transform:scale(0.1)}50%{bottom:80px;opacity:0.4;-webkit-transform:scale(0.5);transform:scale(0.5)}to{bottom:160px;opacity:0;-webkit-transform:scale(0.3);transform:scale(0.3)}}.bubble:nth-child(1){left:315px;-webkit-animation-delay:20.59413ms;animation-delay:20.59413ms;-webkit-animation-duration:800ms;animation-duration:800ms;-webkit-transform:scale(0.5);transform:scale(0.5)}.bubble:nth-child(2){left:65px;-webkit-animation-delay:15.68507ms;animation-delay:15.68507ms;-webkit-animation-duration:400ms;animation-duration:400ms;-webkit-transform:scale(1.1);transform:scale(1.1)}.bubble:nth-child(3){left:5px;-webkit-animation-delay:10.18714ms;animation-delay:10.18714ms;-webkit-animation-duration:500ms;animation-duration:500ms;-webkit-transform:scale(1.2);transform:scale(1.2)}.bubble:nth-child(4){left:101px;-webkit-animation-delay:8.92089ms;animation-delay:8.92089ms;-webkit-animation-duration:1300ms;animation-duration:1300ms;-webkit-transform:scale(0.8);transform:scale(0.8)}.bubble:nth-child(5){left:191px;-webkit-animation-delay:9.29605ms;animation-delay:9.29605ms;-webkit-animation-duration:500ms;animation-duration:500ms;-webkit-transform:scale(0.4);transform:scale(0.4)}