.windmill{
padding:10px; width:400px; height:400px; position:relative;animation-name:moveWindmill;animation-duration:4s;animation-timing-function:linearanimation-delay:0;animation-iteration-count:infinite;animation-play-state:running;/* 動畫: */-moz-animation-name:moveWindmill;-moz-animation-duration:4s;-moz-animation-timing-function:linear;-moz-animation-delay:0;-moz-animation-iteration-count:infinite;-moz-animation-play-state:running;-webkit-animation-name:moveWindmill;-webkit-animation-duration:4s;-webkit-animation-timing-function:linear;-webkit-animation-delay:0;-webkit-animation-iteration-count:infinite;-webkit-animation-play-state:running;-ms-animation-name:moveWindmill;-ms-animation-duration:4s;-ms-animation-timing-function:linear;-ms-animation-delay:0;-ms-animation-iteration-count:infinite;-ms-animation-play-state:running;}.windmill div{ position:absolute; width:100px; height:50px;left:50%; top:50%; border-radius:0 0 50px 50px ; -moz-transform-origin:0% 0%;-webkit-transform-origin:0% 0%;-ms-transform-origin:0% 0%;}.windmill .red{ background-color:red; background: -moz-radial-gradient(right, circle,red , #000); background: -webkit-radial-gradient(right, circle,red , #000);}.windmill .yellow{transform:rotate(90deg); -ms-transform:rotate(90deg); -moz-transform:rotate(90deg); -webkit-transform:rotate(90deg); background-color:yellow; background: -moz-radial-gradient(right, circle,yellow , #000); background: -webkit-radial-gradient(right, circle,yellow , #000); background: -ms-radial-gradient(right, circle,yellow , #000);}.windmill .blue{transform:rotate(180deg);-ms-transform:rotate(180deg); -moz-transform:rotate(180deg); -webkit-transform:rotate(180deg); background-color:blue; background: -moz-radial-gradient(right, circle,blue , #000); background: -webkit-radial-gradient(right, circle,blue , #000); }.windmill .green{transform:rotate(270deg); -ms-transform:rotate(270deg);-moz-transform:rotate(270deg);-webkit-transform:rotate(270deg); background-color:green; background:radial-gradient(right, circle,green , #000);background: -moz-radial-gradient(right, circle,green , #000); background: -webkit-radial-gradient(right, circle,green , #000); background: -ms-radial-gradient(right, circle,green , #000); }

.windmill .dot{ width:50px; height:50px; border-radius:50px ; position:absolute; left:50%;top:50%; margin-left:-25px; margin-top:-25px;background:#fff; background: -moz-radial-gradient(center, circle,#fff , #666); background: -webkit-radial-gradient(center, circle,#fff , #666);}@keyframes moveWindmill /* Firefox */{ 0% { -ms-transform: rotate(0deg)} 25% { -ms-transform: rotate(90deg)} 50% { -ms-transform: rotate(180deg)} 75% { -ms-transform: rotate(270deg)} 100% { -ms-transform: rotate(360deg)}}@-ms-keyframes moveWindmill /* ms*/{ 0% { -ms-transform: rotate(0deg)} 25% { -ms-transform: rotate(90deg)} 50% { -ms-transform: rotate(180deg)} 75% { -ms-transform: rotate(270deg)} 100% { -ms-transform: rotate(360deg)}}@-webkit-keyframes moveWindmill /*webkit*/
{

0% { -webkit-transform: rotate(0deg)}

25% { -webkit-transform: rotate(90deg)}

50% { -webkit-transform: rotate(180deg)}

75% { -webkit-transform: rotate(270deg)}

100% { -webkit-transform: rotate(360deg)} }

@-moz-keyframes moveWindmill /* Firefox */
{
0% { -moz-transform: rotate(0deg)}
25% { -moz-transform: rotate(90deg)}
50% { -moz-transform: rotate(180deg)}
75% { -moz-transform: rotate(270deg)}
100% { -moz-transform: rotate(360deg)}
}