/*关于我*/
div.content {background-color: #eeeeee;position: relative;top:2.75em;margin: 0 auto;padding: 0;height: 100%;}
/*.content的相对定位的原始位置居然不在导航栏下边？？？*/
div.content p.words {text-align: center;word-spacing: 0.1em;color: blue;font-size: 1.5em;margin:0;position: relative;}
div.content ul {text-align: left;list-style-type:none;font-size: 1.6em;margin-left: 40%}
div.content li:first-child  {color: red;}

div.content img#study1 {
						position:absolute;
						animation-name: myfirst1;
						animation-duration: 5s;
						animation-timing-function: linear;
						animation-iteration-count: infinite;
						animation-direction: alternate;
						animation-play-state: running;
						/* Firefox: */
						-moz-animation-name: myfirst1;
						-moz-animation-duration: 5s;
						-moz-animation-timing-function: linear;
						-moz-animation-iteration-count: infinite;
						-moz-animation-direction: alternate;
						-moz-animation-play-state: running;
						/* Safari 和 Chrome: */
						-webkit-animation-name: myfirst1;
						-webkit-animation-duration: 5s;
						-webkit-animation-timing-function: linear;
						-webkit-animation-iteration-count: infinite;
						-webkit-animation-direction: alternate;
						-webkit-animation-play-state: running;
						/* Opera: */
						-o-animation-name: myfirst1;
						-o-animation-duration: 5s;
						-o-animation-timing-function: linear;
						-o-animation-iteration-count: infinite;
						-o-animation-direction: alternate;
						-o-animation-play-state: running;	
						}
						@keyframes myfirst1
						{
							from {left:1em;top:60%;}
							to   {left:1em;top:25%;}
						}
div.content img#study2 {
						position:absolute;
						animation-name: myfirst2;
						animation-duration: 5s;
						animation-timing-function: linear;
						animation-iteration-count: infinite;
						animation-direction: alternate;
						animation-play-state: running;
						/* Firefox: */
						-moz-animation-name: myfirst2;
						-moz-animation-duration: 5s;
						-moz-animation-timing-function: linear;
						-moz-animation-iteration-count: infinite;
						-moz-animation-direction: alternate;
						-moz-animation-play-state: running;
						/* Safari 和 Chrome: */
						-webkit-animation-name: myfirst2;
						-webkit-animation-duration: 5s;
						-webkit-animation-timing-function: linear;
						-webkit-animation-iteration-count: infinite;
						-webkit-animation-direction: alternate;
						-webkit-animation-play-state: running;
						/* Opera: */
						-o-animation-name: myfirst2;
						-o-animation-duration: 5s;
						-o-animation-timing-function: linear;
						-o-animation-iteration-count: infinite;
						-o-animation-direction: alternate;
						-o-animation-play-state: running;
						}
						@keyframes myfirst2
						{
							from {right:1em;top:25%;}
							to   {right:1em;top:60%;}
						}