实战(移动端) #

body, ol, ul, h1, h2, h3, h4, h5, h6, p, th, td, dl, dd, form, fieldset, legend, input, textarea, select 
{
    margin: 0;
    padding: 0
}
body {
    font: 12px "宋体", "Arial Narrow", HELVETICA;
    background: #fff;
    -webkit-text-size-adjust: 100%;
    touch-action: none;
    line-height: 1; 
}
a {
    color: #172c45;
    text-decoration: none
}
a:hover {
    color: #cd0200;
    text-decoration: underline
}
em {
    font-style: normal
}
ul,li {
    list-style: none
}
img {
    border: 0;
    vertical-align: middle
}
table {
    border-collapse: collapse;
    border-spacing: 0
}
p {
    word-wrap: break-word
}
a:hover {
    text-decoration: none;
}

# 实战(移动端)

## (一) viewport 设置

```html
<meta
  name="viewport"
  content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"
/>

body, ol, ul, h1, h2, h3, h4, h5, h6, p, th, td, dl, dd, form, fieldset, legend, input, textarea, select 
{
    margin: 0;
    padding: 0;
}
body {
    font: 12px "宋体", "Arial Narrow", HELVETICA;
    background: #fff;
    -webkit-text-size-adjust: 100%;
    touch-action: none;
    line-height: 1; 
}
a {
    color: #172c45;
    text-decoration: none
}
a:hover {
    color: #cd0200;
    text-decoration: underline
}
em {
    font-style: normal
}
ul,li {
    list-style: none
}
img {
    border: 0;
    vertical-align: middle
}
table {
    border-collapse: collapse;
    border-spacing: 0
}
p {
    word-wrap: break-word
}
a:hover {
    text-decoration: none;
}

 * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
ul,li { list-style: none; }
/* 公共样式 */

/* body的背景颜色 */
body { background-color: #f4f4f4; }
/* 文本居中 */
.tac { text-align: center; }
/* 相对定位 */
.rel { position: relative; }
/* 绝对定位 */
.abs{ position: absolute }
/* 固定定位 */
.fixed { position: fixed; }
/* 隐藏 */
.dsn { display: none; }
/* 宽度100% */
.w100p { width: 100%; }
.h100p { height: 100%; }

/* 颜色 */
.fff { color: #fff; }
.bg-fff { background-color: #fff; }
/* 主题色 */
.base { color: #f03d37; }
.bg-base { background-color: #f03d37; }

/* 字体 */
.f10 { font-size: 10px; }
.f12 { font-size: 12px; }
.f14 { font-size: 14px; }
.f16 { font-size: 16px; }
.f18 { font-size: 18px; } 
.f20 { font-size: 20px; }
.f22 { font-size: 22px; }
.f24 { font-size: 24px; }
.f26 { font-size: 26px; }
.f28 { font-size: 28px; }
.f30 { font-size: 30px; }
.f32 { font-size: 32px; }
.f34 { font-size: 34px; }
.f36 { font-size: 36px; } 

/* 弹性盒子 */
.flex { display: flex; }
.jc-c { justify-content: center; }
.jc-sb { justify-content: space-between; }
.jc-sa { justify-content: space-around; }
.aic { align-items: center; }
/* 盒子排成一列 */
.fdc { flex-direction: column; }
/* 剩余空间分配 */
.fg1 { flex-grow: 1; }

/* margin */
.mt-5 {margin-top: 5px;}
.mt-10 {margin-top: 10px;}
.mt-15 {margin-top: 15px;}
.mt-20 {margin-top: 20px;}
.mt-25 {margin-top: 25px;}
.mt-30 {margin-top: 30px;}
.ml-5 {margin-left: 5px;}
.ml-10 {margin-left: 10px;}
.ml-15 {margin-left: 15px;}
.ml-20 {margin-left: 20px;}
.ml-25 {margin-left: 25px;}
.ml-30 {margin-left: 30px;}
.mr-5 {margin-right: 5px;}
.mr-10 {margin-right: 10px;}
.mr-15 {margin-right: 15px;}
.mr-20 {margin-right: 20px;}
.mr-25 {margin-right: 25px;}
.mr-30 {margin-right: 30px;}
.mb-5 {margin-bottom: 5px;}
.mb-10 {margin-bottom: 10px;}
.mb-15 {margin-bottom: 15px;}
.mb-20 {margin-bottom: 20px;}
.mb-25 {margin-bottom: 25px;}
.mb-30 {margin-bottom: 30px;}

/* padding */
.pt-5 {padding-top: 5px;}
.pt-10 {padding-top: 10px;}
.pt-15 {padding-top: 15px;}
.pt-20 {padding-top: 20px;}
.pt-25 {padding-top: 25px;}
.pt-30 {padding-top: 30px;}
.pl-5 {padding-left: 5px;}
.pl-10 {padding-left: 10px;}
.pl-15 {padding-left: 15px;}
.pl-20 {padding-left: 20px;}
.pl-25 {padding-left: 25px;}
.pl-30 {padding-left: 30px;}
.pr-5 {padding-right: 5px;}
.pr-10 {padding-right: 10px;}
.pr-15 {padding-right: 15px;}
.pr-20 {padding-right: 20px;}
.pr-25 {padding-right: 25px;}
.pr-30 {padding-right: 30px;}
.pb-5 {padding-bottom: 5px;}
.pb-10 {padding-bottom: 10px;}
.pb-15 {padding-bottom: 15px;}
.pb-20 {padding-bottom: 20px;}
.pb-25 {padding-bottom: 25px;}
.pb-30 {padding-bottom: 30px;}