html切图第一课

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太阳光uc课堂html切图第一课

网页切图要点：尽量优化图片大小，取最小图片体积，合并小图片，减少服务器请求。html套嵌深度在三级左右为宜，尽量避免使用table，尊重效果图，精确到每一个像素！

第一课相应素材下载：点击这里下载

@charset "utf-8";
/* CSS Reset */
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6,     
pre, form, fieldset, input, textarea, p, blockquote, th, td {
	padding: 0;	margin: 0;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
 } 
a{
    hide-focus: expression(this.hideFocus=true);  /* for ie 5+ */
    outline: none;  /* for firefox 1.5 + */
    text-decoration:none;
    color: #333;
}
fieldset, img { border: 0 }
ol, ul { list-style: none }
address, caption, cite, code, dfn, em, strong, th, var {
    font-weight: normal;
    font-style: normal;
 }    
h1, h2, h3, h4, h5, h6 {
    font-weight: normal;
    font-size: 100%;
 }
/* CSS Reset */
body{
    text-align: center;
    background: url("body.jpg") repeat-x scroll 0 0
}
#top{
    height: 36px;
    line-height: 36px;
    background: url("top.jpg") repeat-x scroll 0 0;
    border-bottom: 1px solid #87ADD1
}
.main{
    height: 36px;
    width:980px;
    text-align: left;
    margin:0 auto;
}
#top .main span{
    float: right;
}
#top strong{
    color: #FF6600
}
#logo{
    height:82px;
    background-color:#fff;
}
#logo img{
    margin:10px
}
.menu_bg{
    background: url("menu_bg.jpg") repeat-x 0 0;
}
.menu_right{
    background: url("menu_right.jpg") no-repeat right 0;
}
.menu{
    height:50px;
    padding-left:10px;
    background: url("menu_left.jpg") no-repeat left 0;
}
.nav{
    width:100px;
    float: left;
    line-height: 35px;
    text-align: center;
    background: url("nav.jpg") no-repeat right 0;
    position: relative;
}
.nav a{
    font:bold 14px/35px "宋体";
    color: #fff;
}
.nav a:hover{
    color: #FFCC00;
}

.nav_ul{
    background-color:#fff;
    width:98px;
    padding: 4px 0;
    border: 2px solid #E50D0E;
    border-top:none;
    position: absolute;
    display: none;
    left:-2px;
    top:35px;
}
.nav .nav_ul li{line-height: 25px}
.nav .nav_ul a{
    font:12px/22px "宋体";
    color: #015CAB
}
/*广告动画*/
.banner {position:relative;width:980px; height:300px; overflow:hidden;}
.banner_list img{width:980px; height:300px;border:0}
.banner_bg {position:absolute; bottom:0;background-color:#000;height:28px;filter: Alpha(Opacity=50);opacity:0.5;z-index:1;cursor:pointer; width:980px; }
.banner_info{position:absolute; bottom:0; left:5px;height:22px;color:#fff;z-index:2;font-size:12px;cursor:pointer}
.banner_text {position:absolute;width:120px;z-index:3; right:3px; bottom:3px;}
.banner_ul {position:absolute;list-style-type:none;z-index:4;margin:0; padding:0; bottom:3px; right:3px;}
.banner_ul li { width:20px;line-height:20px;text-align:center;float:left;display:block;color:#1163B5;border:#e7f2fd 1px solid;background:#FFF;cursor:pointer}
.banner_ul .banner_on { background:#1163B5;color:#FFF}
.banner_list a{position:absolute;}
/*广告动画*/