1、编写HTML部分，以下是源代码：

<!-- 引入favicon图标 -->
<link rel="shortcut icon" href="favicon.ico" />
<!-- 引入我们初始化样式文件 -->
<link rel="stylesheet" href="css/base.css">
<!-- 引入我们公共的样式文件 -->
<link rel="stylesheet" href="css/common.css">
<!-- 引入我们index.css文件  -->
<link rel="stylesheet" href="css/index.css">

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2、编写CSS部分 （1）编写base部分 /* 把我们所有标签的内外边距清零 */ * { margin: 0; padding: 0; /* css3盒子模型 */ box-sizing: border-box; } /* em 和 i 斜体的文字不倾斜 */ em, i { font-style: normal } /* 去掉li 的小圆点 */ li { list-style: none }

img {
/* border 0 照顾低版本浏览器 如果 图片外面包含了链接会有边框的问题 /
border: 0;
/ 取消图片底侧有空白缝隙的问题 */
vertical-align: middle
}

button {
/* 当我们鼠标经过button 按钮的时候，鼠标变成小手 */
cursor: pointer
}

a {
color: #666;
text-decoration: none
}

a:hover {
color: #c81623
}

button,
input {
/* “\5B8B\4F53” 就是宋体的意思 这样浏览器兼容性比较好 /
font-family: Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, “\5B8B\4F53”, sans-serif;
/ 默认有灰色边框我们需要手动去掉 */
border: 0;
outline: none;
}

body {
/* CSS3 抗锯齿形 让文字显示的更加清晰 */
-webkit-font-smoothing: antialiased;
background-color: #fff;
font: 12px/1.5 Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, “\5B8B\4F53”, sans-serif;
color: #666
}

.hide,
.none {
display: none
}
/* 清除浮动 */
.clearfix:after {
visibility: hidden;
clear: both;
display: block;
content: “.”;
height: 0
}

.clearfix {
zoom: 1
}
（2）编写common部分
/ 声明字体图标 这里一定要注意路径的变化 /
@font-face {
font-family: ‘icomoon’;
src: url(’…/fonts/icomoon.eot?tomleg’);
src: url(’…/fonts/icomoon.eot?tomleg#iefix’) format(‘embedded-opentype’),
url(’…/fonts/icomoon.ttf?tomleg’) format(‘truetype’),
url(’…/fonts/icomoon.woff?tomleg’) format(‘woff’),
url(’…/fonts/icomoon.svg?tomleg#icomoon’) format(‘svg’);
font-weight: normal;
font-style: normal;
font-display: block;
}
/ 版心 /
.w {
width: 1200px;
margin: 0 auto;
}
.fl {
float: left;
}
.fr {
float: right;
}
.style_red {
color: #c81623;
}
/ 快捷导航模块 /
.shortcut {
height: 31px;
line-height: 31px;
background-color: #f1f1f1;
}
.shortcut ul li {
float: left;
}
/ 选择所有的偶数的小li /
.shortcut .fr ul li:nth-child(even) {
width: 1px;
height: 12px;
background-color: #666;
margin: 9px 15px 0;
}
.arrow-icon::after {
content: ‘\e91e’;
font-family: ‘icomoon’;
margin-left: 6px;
}
/ header 头部制作 */
.header {
position: relative;
height: 105px;

}
.logo {
position: absolute;
top: 25px;
width: 171px;
height: 61px;

}
.logo a {
display: block;
width: 171px;
height: 61px;
background: url(…/images/logo.png) no-repeat;
/* font-size: 0;京东的做法*/
/* 淘宝的做法让文字隐藏 /
text-indent: -9999px;
overflow: hidden;
}
.search {
position: absolute;
left: 346px;
top: 25px;
width: 538px;
height: 36px;
border: 2px solid #b1191a;
}
.search input {
float: left;
width: 454px;
height: 32px;
padding-left: 10px;
}
.search button {
float: left;
width: 80px;
height: 32px;
background-color: #b1191a;
font-size: 16px;
color: #fff;
}
.hotwords {
position: absolute;
top: 66px;
left: 346px;
}
.hotwords a {
margin: 0 10px;
}
.shopcar {
position: absolute;
right: 60px;
top: 25px;
width: 140px;
height: 35px;
line-height: 35px;
text-align: center;
border: 1px solid #dfdfdf;
background-color: #f7f7f7;
}
.shopcar::before {
content: ‘\e93a’;
font-family: ‘icomoon’;
margin-right: 5px;
color: #b1191a;
}
.shopcar::after {
content: ‘\e920’;
font-family: ‘icomoon’;
margin-left: 10px;
}
.count {
position: absolute;
top: -5px;
left: 105px;
height: 14px;
line-height: 14px;
color: #fff;
background-color: #e60012;
padding: 0 5px;
border-radius: 7px 7px 7px 0;
}
/ nav模块制作 /
.nav {
height: 47px;
border-bottom: 2px solid #b1191a;
}
.nav .dropdown {
float: left;
width: 210px;
height: 45px;
background-color: #b1191a;
}
.nav .navitems {
float: left;
}
.dropdown .dt {
width: 100%;
height: 100%;
color: #fff;
text-align: center;
line-height: 45px;
font-size: 16px;
}
.dropdown .dd {
/ display: none; */
width: 210px;
height: 465px;
background-color: #c81623;
margin-top: 2px;
}
.dropdown .dd ul li {
position: relative;
height: 31px;
line-height: 31px;
margin-left: 2px;
padding-left: 10px;
}
.dropdown .dd ul li:hover {
background-color: #fff;
}
.dropdown .dd ul li::after {
position: absolute;
top: 1px;
right: 10px;
color: #fff;
font-family: ‘icomoon’;
content: ‘\e920’;
font-size: 14px;
}
.dropdown .dd ul li a {
font-size: 14px;
color: #fff;
}
.dropdown .dd ul li:hover a {
color: #c81623;
}
.navitems ul li {
float: left;
}
.navitems ul li a {
display: block;
height: 45px;
line-height: 45px;
font-size: 16px;
padding: 0 25px;
}

/* 底部模块制作 /
.footer {
height: 415px;
background-color: #f5f5f5;
padding-top: 30px;
}
.mod_service {
height: 80px;
border-bottom: 1px solid #ccc;
}
.mod_service ul li {
float: left;
width: 300px;
height: 50px;
padding-left: 35px;
}
.mod_service ul li h5 {
float: left;
width: 50px;
height: 50px;
background: url(…/images/icons.png) no-repeat -252px -2px;
margin-right: 8px;
}
.service_txt h4 {
font-size: 14px;
}
.service_txt p {
font-size: 12px;
}
.mod_help {
height: 185px;
border-bottom: 1px solid #ccc;
padding-top: 20px;
padding-left: 50px;
}
.mod_help dl {
float: left;
width: 200px;
}
.mod_help dl:last-child {
width: 90px;
text-align: center;
}
.mod_help dl dt {
font-size: 16px;
margin-bottom: 10px;
}
.mod_copyright {
text-align: center;
padding-top: 20px;
}
.links {
margin-bottom: 15px;
}
.links a {
margin: 0 3px;
}
.copyright {
line-height: 20px;
}
（3）编写index部分
.main {
width: 980px;
height: 455px;
margin-left: 220px;
margin-top: 10px;
}
.focus {
float: left;
width: 721px;
height: 455px;
background-color: purple;
}
.newsflash {
float: right;
width: 250px;
height: 455px;
}
.news {
height: 165px;
border: 1px solid #e4e4e4;
}
.news-hd {
height: 33px;
line-height: 33px;
border-bottom: 1px dotted #e4e4e4;
padding: 0 15px;
}
.news-hd h5 {
float: left;
font-size: 14px;
}
.news-hd .more {
float: right;
}
.news-hd .more::after {
font-family: ‘icomoon’;
content: ‘\e920’;
}
.news-bd {
padding: 5px 15px 0;
}
.news-bd ul li {
height: 24px;
line-height: 24px;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
}
.lifeservice {
overflow: hidden;
height: 209px;
/ background-color: purple; /
border: 1px solid #e4e4e4;
border-top: 0;
}
.lifeservice ul {
width: 252px;
}
.lifeservice ul li {
float: left;
width: 63px;
height: 71px;
border-right: 1px solid #e4e4e4;
border-bottom: 1px solid #e4e4e4;
text-align: center;
}
.lifeservice ul li i {
display: inline-block;
width: 24px;
height: 28px;
background-color: pink;
margin-top: 12px;
background: url(…/images/icons.png) no-repeat -19px -15px;
}
.bargain {
margin-top: 5px;
}
/ 推荐模块 /
.recom {
height: 163px;
background-color: #ebebeb;
margin-top: 12px;
}
.recom_hd {
float: left;
height: 163px;
width: 205px;
background-color: #5c5251;
text-align: center;
padding-top: 30px;
}
.recom_bd {
float: left;
}
.recom_bd ul li {
position: relative;
float: left;
}
.recom_bd ul li img {
width: 248px;
height: 163px;
}
.recom_bd ul li:nth-child(-n+3)::after {
content: ‘’;
position: absolute;
right: 0;
top: 10px;
width: 1px;
height: 145px;
background-color: #ddd;
}
/ 家用电梯模块 */
.box_hd {
height: 30px;
border-bottom: 2px solid #c81623;
}
.box_hd h3 {
float: left;
font-size: 18px;
color: #c81623;
font-weight: 400;
}
.tab_list {
float: right;
line-height: 30px;
}
.tab_list ul li {
float: left;
}
.tab_list ul li a {
margin: 0 15px;
}
.floor .w {
margin-top: 30px;
}
.box_bd {
height: 361px;

}
.tab_list_item>div {
float: left;
height: 361px;
}

.col_210 {
width: 210px;
background-color: #f9f9f9;
text-align: center;
}
.col_210 ul li {
float: left;
width: 85px;
height: 34px;
border-bottom: 1px solid #ccc;
text-align: center;
line-height: 33px;
margin-right: 10px;
}
.col_210 ul {
padding-left: 12px;
}
.col_329 {
width: 329px;
}
.col_221 {
width: 221px;
border-right: 1px solid #ccc;
}
.col_219 {
width: 219px;
}
.bb {
/* 一般情况下，a如果包含有宽度的盒子，a需要转为块级元素 /
display: block;
border-bottom: 1px solid #ccc;
}
（4）编写list部分
/ 列表页专有的css */
.nav {
overflow: hidden;
}
.sk {
position: absolute;
left: 190px;
top: 40px;
border-left: 1px solid #c81523;
padding: 3px 0 0 14px;
}
.sk_list {
float: left;
}
.sk_list ul li {
float: left;
}
.sk_list ul li a {
display: block;
line-height: 47px;
padding: 0 30px;
font-size: 16px;
font-weight: 700;
color: #000;
}
.sk_con {
float: left;
}
.sk_con ul li {
float: left;
}
.sk_con ul li a {
display: block;
line-height: 49px;
padding: 0 20px;
font-size: 14px;

}
.sk_con ul li:last-child a::after {
content: ‘\e91e’;
font-family: ‘icomoon’;
}
.sk_bd ul li {
overflow: hidden;
float: left;
margin-right: 13px;
width: 290px;
height: 460px;
border: 1px solid transparent;
}
.sk_bd ul li:nth-child(4n) {
margin-right: 0;
}
.sk_bd ul li:hover {
border: 1px solid #c81523;
}
（5）编写register部分
.w {
width: 1200px;
margin: 0 auto;
}
header {
height: 84px;
border-bottom: 2px solid #c81523;
}
.logo {
padding-top: 18px;
}
.registerarea {
height: 522px;
border: 1px solid #ccc;
margin-top: 20px;
}
.registerarea h3 {
height: 42px;
border-bottom: 1px solid #ccc;
background-color: #ececec;
line-height: 42px;
padding: 0 10px;
font-size: 18px;
font-weight: 400;
}
.login {
float: right;
font-size: 14px;
}
.login a {
color: #c81523;
}
.reg_form {
width: 600px;

margin: 50px auto 0;

}
.reg_form ul li {
margin-bottom: 20px;
}
.reg_form ul li label {
display: inline-block;
width: 88px;
text-align: right;
}
.reg_form ul li .inp {
width: 242px;
height: 37px;
border: 1px solid #ccc;
}
.error {
color: #c81523;
}
.error_icon,
.success_icon {
display: inline-block;
vertical-align: middle;
width: 20px;
height: 20px;
background: url(…/images/error.png) no-repeat;
margin-top: -2px;
}
.success {
color: green;
}
.success_icon {
background: url(…/images/success.png) no-repeat;
}
.safe {
padding-left: 170px;
}
.safe em {
padding: 0 12px;
color: #fff;
}
.ruo {
background-color: #de1111;
}
.zhong {
background-color: #40b83f;
}

.qiang {
background-color: #f79100;
}
.agree {
padding-left: 95px;
}
.agree input {
vertical-align: middle;
}
.agree a {
color: #1ba1e6;
}
.btn {
width: 200px;
height: 34px;
background-color: #c81623;
font-size: 14px;
color: #fff;
margin: 30px 0 0 70px;
}
.mod_copyright {
text-align: center;
padding-top: 20px;
}
.links {
margin-bottom: 15px;
}
.links a {
margin: 0 3px;
}
.copyright {
line-height: 20px;
}

效果图如下：

标签：CSS3,font,color,height,width,HTML5,li,品优购,left
来源： https://blog.csdn.net/m0_46374969/article/details/111227637