body{ margin-top:0px;margin-left: 0px;	margin-right: 0px;	margin-bottom: 0px; font-size:12px; color:#2D88CE;font-family: arial, 宋体, serif; line-height:120%; OVERFLOW: auto; WORD-BREAK: break-all; background-color:#8CE6FF}
td{font-size:12px; color:#2D88CE;font-family:Arial, Helvetica, sans-serif; line-height:180%;}
a:link {	color: #2D88CE; text-decoration:none}
a:visited {	color: #2D88CE;text-decoration:none}
a:hover {	color: #575757;text-decoration:none}
a:active {	color: #2D88CE;text-decoration:none}
.strong{
color:#575757; font-weight:bold; font-size:12px;line-height:180%;
}
.tdleft
{
padding-left:10px;
}
.tdd{
padding-bottom:10px;
padding-left:10px;
padding-right:10px;
padding-top:5px;
line-height:180%;
}
.line{color: #2D88CE; text-decoration:underline}
.line:link {	color: #2D88CE; text-decoration:underline}
.line:visited {	color: #2D88CE;text-decoration:underline}
.line:hover {	color: #575757;text-decoration:underline}
.line:active {	color: #2D88CE;text-decoration:underline}
.uesr{color: #2D88CE; text-decoration:underline}
.uesr:link {	color: #2D88CE; text-decoration:underline}
.uesr:visited {	color: #2D88CE;text-decoration:underline}
.uesr:hover {	color: #575757;text-decoration:underline}
.uesr:active {	color: #2D88CE;text-decoration:underline}
.aboutlink{ color: #2D88CE;}
.aboutlink:link {color: #2D88CE; text-decoration: none}
.aboutlink:visited {color:#2D88CE; text-decoration: none}
.aboutlink:hover {color:#333333; text-decoration: none}
.aboutlink:active {color:#2D88CE; text-decoration: none}
.input{border:1px #2D88CE solid;color:#C80590;}
.newslink{ color: #2D88CE;}
.newslink:link {color: #2D88CE; text-decoration: none}
.newslink:visited {color:#2D88CE; text-decoration: none}
.newslink:hover {color:#575757; text-decoration: none}
.newslink:active {color:#2D88CE; text-decoration: none}
.maillink{ color: #2D88CE; font-weight:bold; line-height:150%}
.maillink:link {color:#2D88CE; text-decoration: none}
.maillink:visited {color:#2D88CE; text-decoration: none}
.maillink:hover {color:#575757; text-decoration: none}
.maillink:active {color:#2D88CE; text-decoration: none}
.border{border:1px #C7C7C7 solid;}
.hei{ color:#000000}
.zy{border-left:1px #C7C7C7 solid; border-right:1px #C7C7C7 solid;}
.z{border-left:1px #C7C7C7 solid; }
.x{border-bottom:1px #c7c7c7 solid;}
.l{background-image: url(img/Point_line_01.gif);height: 22px;}
#btn3-border {
	BORDER-RIGHT: #d2e1ee 1px solid; BORDER-TOP: #d2e1ee 1px solid; FLOAT: left; MARGIN-LEFT: 4px; BORDER-LEFT: #d2e1ee 1px solid; WIDTH: 66px; BORDER-BOTTOM: #d2e1ee 1px solid; HEIGHT: 23px
}
#btn3-border {
	FLOAT: none; MARGIN: 0px
}
#btn3 {
	BACKGROUND: url(img/163_index_imgs_6.gif) no-repeat
}
#btn3 {
	BORDER-TOP-WIDTH: 0px; BACKGROUND-POSITION: -14px -195px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; MARGIN-LEFT: 0px; WIDTH: 66px; CURSOR: pointer; COLOR: #666; LINE-HEIGHT: 23px; HEIGHT: 23px; TEXT-ALIGN: center; BORDER-RIGHT-WIDTH: 0px
}
#btn3 {
	BACKGROUND-POSITION: -14px -221px; FONT-WEIGHT: bolder; FONT-SIZE: 11px; WIDTH: 164px; HEIGHT: 31px
}
#btn1 {
	BACKGROUND: url(img/163_index_imgs_6.gif) no-repeat
}
#btn1 {
	BORDER-TOP-WIDTH: 0px; BACKGROUND-POSITION: -14px -195px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; MARGIN-LEFT: 0px; WIDTH: 66px; CURSOR: pointer; COLOR: #666; LINE-HEIGHT: 23px; HEIGHT: 23px; TEXT-ALIGN: center; BORDER-RIGHT-WIDTH: 0px
}
#btn1-border {
	BORDER-RIGHT: #d2e1ee 1px solid; BORDER-TOP: #d2e1ee 1px solid; FLOAT: left; MARGIN-LEFT: 4px; BORDER-LEFT: #d2e1ee 1px solid; WIDTH: 66px; BORDER-BOTTOM: #d2e1ee 1px solid; HEIGHT: 23px
}
#btn2 {
	BACKGROUND: url(img/163_index_imgs_6.gif) no-repeat
}
#btn2 {
	BORDER-TOP-WIDTH: 0px; BACKGROUND-POSITION: -14px -195px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; MARGIN-LEFT: 0px; WIDTH:50px; CURSOR: pointer; COLOR: #666; LINE-HEIGHT: 23px; HEIGHT: 23px; TEXT-ALIGN: center; BORDER-RIGHT-WIDTH: 0px
}
#btn2-border {
	BORDER-RIGHT: #d2e1ee 1px solid; BORDER-TOP: #d2e1ee 1px solid; FLOAT: left; MARGIN-LEFT: 4px; BORDER-LEFT: #d2e1ee 1px solid; WIDTH:50px; BORDER-BOTTOM: #d2e1ee 1px solid; HEIGHT: 23px
}
.sx{padding-bottom:10px;}
.headings {
	MARGIN-TOP: 10px; FONT-WEIGHT: normal; FONT-SIZE:12px; COLOR:#44759B; LINE-HEIGHT: 30px; font-family:Verdana, Arial, Helvetica, sans-serif;LETTER-SPACING:0px;font-weight:bold;
}
<!-- menu样式   5.21 6.21 7.21 8.21 9.21 10.21  -->

*{margin:0;padding:0;}
#nav {
  line-height: 33px;  list-style-type: none;padding-left:70px;
}

#nav a {
 display: block; width: 100px; text-align:center;color:#fff;font-weight:bold; 
}

#nav a:link  {
 color:#fff; text-decoration:none;font-weight:bold;
}
#nav a:visited  {
 color:#fff;text-decoration:none;font-weight:bold;
}
#nav a:hover  {
 color: #000000;text-decoration:none;font-weight:bold; position:relative;top:2px;
}

#nav li {
 float: left; width: 80px;
}
#nav li ul {
 line-height: 27px;  list-style-type: none;text-align:left;
 left: -999em; width: 190px; position: absolute; font-size:11px;
}
#nav li ul li{
 float: left; width: 180px;
 background: #F8F8F3;
}


#nav li ul a{
 display: block; width: 190px;w\idth: 190px;text-align:left;padding-left:10px;font-weight;font-weight:normal;padding-right:14px;
}

#nav li ul a:link  {
 color:#333; text-decoration:none;font-weight:normal;
}
#nav li ul a:visited  {
 color:#333;text-decoration:none;font-weight:normal;
}
#nav li ul a:hover  {
 color:#F3F3F3;text-decoration:none;font-weight:normal;
 background:#2b86cd;
}

#nav li:hover ul {
 left: auto;
}
#nav li.sfhover ul {
 left: auto;
}
#content {
 clear: left; 
}
<!--end menu样式 -->
.contentt {
}
.contentt img{
   border:3px #2965BE solid;
}