课时2 一些默认样式

根据自己的使用习惯可以添加一些基础样式

html { font-family: "Helvetica Neue", Helvetica, STHeiTi, Arial, sans-serif; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; font-size: 62.5%; }
body { margin: 0; font-size: 1.4rem; line-height: 1.5; color: #333333; background-color: white; height: 100%; overflow-x: hidden; -webkit-overflow-scrolling: touch; }

article, aside, details, figcaption, figure, footer, header, hgroup, main, nav, section, summary { display: block; }
audio, canvas, progress, video { display: inline-block; vertical-align: baseline; }
audio:not([controls]) { display: none; height: 0; }
[hidden], template { display: none; }
svg:not(:root) { overflow: hidden; }

a { background: transparent; text-decoration: none; -webkit-tap-highlight-color: transparent; color: #0088cc; }
a:active { outline: 0; }
a:active { color: #006699; }
abbr[title] { border-bottom: 1px dotted; }
b, strong { font-weight: bold; }
dfn { font-style: italic; }
mark { background: #ff0; color: #000; }
small { font-size: 80%; }
sub, sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; }
sup { top: -0.5em; }
sub { bottom: -0.25em; }
img { border: 0; vertical-align: middle; }
hr { -moz-box-sizing: content-box; box-sizing: content-box; height: 0; }
pre { overflow: auto; white-space: pre; white-space: pre-wrap; word-wrap: break-word; }
code, kbd, pre, samp { font-family: monospace, monospace; font-size: 1em; }

button, input, optgroup, select, textarea { color: inherit; font: inherit; margin: 0; }
button { overflow: visible; }
button, select { text-transform: none; }
button, html input[type="button"], input[type="reset"], input[type="submit"] { -webkit-appearance: button; cursor: pointer; }
button[disabled], html input[disabled] { cursor: default; }
button::-moz-focus-inner, input::-moz-focus-inner { border: 0; padding: 0; }
input { line-height: normal; }
input[type="checkbox"], input[type="radio"] { box-sizing: border-box; padding: 0; }
input[type="number"]::-webkit-inner-spin-button, input[type="number"]::-webkit-outer-spin-button { height: auto; }
input[type="search"] { -webkit-appearance: textfield; -moz-box-sizing: border-box; -webkit-box-sizing: border-box; box-sizing: border-box; }
input[type="search"]::-webkit-search-cancel-button, input[type="search"]::-webkit-search-decoration { -webkit-appearance: none; }
fieldset { border: 1px solid #c0c0c0; margin: 0 2px; padding: 0.35em 0.625em 0.75em; }
legend { border: 0; padding: 0; }
textarea { overflow: auto; resize: vertical; }
optgroup { font-weight: bold; }
table { border-collapse: collapse; border-spacing: 0; }
td, th { padding: 0; }

html, button, input, select, textarea { font-family: "Helvetica Neue", Helvetica, STHeiTi, Arial, sans-serif; }
h1, h2, h3, h4, h5, h6, p, figure, form, blockquote { margin: 0; }
ul, ol, li, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none outside none; }
h1, h2, h3 { line-height: 2; font-weight: normal; }
h1 { font-size: 1.8rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.4rem; }
input::-moz-placeholder, textarea::-moz-placeholder { color: #cccccc; }
input:-ms-input-placeholder, textarea:-ms-input-placeholder { color: #cccccc; }
input::-webkit-input-placeholder, textarea::-webkit-input-placeholder { color: #cccccc; }

* { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }

补充：

font-family: "Helvetica Neue", Helvetica, STHeiTi, Arial, sans-serif;

IOS

iOS 4.0+ 使用英文字体 Helvetica Neue，之前的iOS版本降级使用 Helvetica，中文字体设置为华文黑体STHeiTi。

Android

原生Android下中文字体与英文字体都选择默认的无衬线字体，4.0之前版本英文字体原生Android使用的是Droid Sans，中文字体原生Android会命中Droid Sans Fallback，4.0+ 中英文字体都会使用原生Android新的Roboto字体。其他第三方Android系统也一致选择默认的无衬线字体。

最后加上Arial字体方便pc端查看效果。

出处：http://www.w3cplus.com/mobile/mobile-terminal-refactoring-reset-style.html