normalize.css用这个来设置默认样式,不要用reset.css

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/*! normalize.css v7.0.0 | MIT License | github.com/necolas/normalize.css */
/* Document
========================================================================== */
/**
* 1. Correct the line height in all browsers.
* 2. Prevent adjustments of font size after orientation changes in
* IE on Windows Phone and in iOS.
*/
html {
line-height : 1.15 ; /* 1 */
-ms-text-size-adjust : 100 % ; /* 2 */
-webkit-text-size-adjust : 100 % ; /* 2 */
}
/* Sections
========================================================================== */
/**
* Remove the margin in all browsers (opinionated).
*/
body {
margin : 0 ;
}
/**
* Add the correct display in IE 9-.
*/
article ,
aside ,
footer ,
header ,
nav ,
section {
display : block ;
}
/**
* Correct the font size and margin on `h1` elements within `section` and
* `article` contexts in Chrome, Firefox, and Safari.
*/
h1 {
font-size : 2 em ;
margin : 0.67 em 0 ;
}
/* Grouping content
========================================================================== */
/**
* Add the correct display in IE 9-.
* 1. Add the correct display in IE.
*/
figcaption ,
figure ,
main { /* 1 */
display : block ;
}
/**
* Add the correct margin in IE 8.
*/
figure {
margin : 1 em 40 px ;
}
/**
* 1. Add the correct box sizing in Firefox.
* 2. Show the overflow in Edge and IE.
*/
hr {
box-sizing : content-box ; /* 1 */
height : 0 ; /* 1 */
overflow : visible ; /* 2 */
}
/**
* 1. Correct the inheritance and scaling of font size in all browsers.
* 2. Correct the odd `em` font sizing in all browsers.
*/
pre {
font-family : monospace , monospace ; /* 1 */
font-size : 1 em ; /* 2 */
}
/* Text-level semantics
========================================================================== */
/**
* 1. Remove the gray background on active links in IE 10.
* 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
*/
a {
background-color : transparent ; /* 1 */
-webkit-text-decoration-skip : objects ; /* 2 */
}
/**
* 1. Remove the bottom border in Chrome 57- and Firefox 39-.
* 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
*/
abbr [ title ] {
border-bottom : none ; /* 1 */
text-decoration : underline ; /* 2 */
text-decoration : underline dotted ; /* 2 */
}
/**
* Prevent the duplicate application of `bolder` by the next rule in Safari 6.
*/
b ,
strong {
font-weight : inherit ;
}
/**
* Add the correct font weight in Chrome, Edge, and Safari.
*/
b ,
strong {
font-weight : bolder ;
}
/**
* 1. Correct the inheritance and scaling of font size in all browsers.
* 2. Correct the odd `em` font sizing in all browsers.
*/
code ,
kbd ,
samp {
font-family : monospace , monospace ; /* 1 */
font-size : 1 em ; /* 2 */
}
/**
* Add the correct font style in Android 4.3-.
*/
dfn {
font-style : italic ;
}
/**
* Add the correct background and color in IE 9-.
*/
mark {
background-color : #ff0 ;
color : #000 ;
}
/**
* Add the correct font size in all browsers.
*/
small {
font-size : 80 % ;
}
/**
* Prevent `sub` and `sup` elements from affecting the line height in
* all browsers.
*/
sub ,
sup {
font-size : 75 % ;
line-height : 0 ;
position : relative ;
vertical-align : baseline ;
}
sub {
bottom : - 0.25 em ;
}
sup {
top : - 0.5 em ;
}
/* Embedded content
========================================================================== */
/**
* Add the correct display in IE 9-.
*/
audio ,
video {
display : inline-block ;
}
/**
* Add the correct display in iOS 4-7.
*/
audio : not ([ controls ]) {
display : none ;
height : 0 ;
}
/**
* Remove the border on images inside links in IE 10-.
*/
img {
border-style : none ;
}
/**
* Hide the overflow in IE.
*/
svg : not (: root ) {
overflow : hidden ;
}
/* Forms
========================================================================== */
/**
* 1. Change the font styles in all browsers (opinionated).
* 2. Remove the margin in Firefox and Safari.
*/
button ,
input ,
optgroup ,
select ,
textarea {
font-family : sans-serif ; /* 1 */
font-size : 100 % ; /* 1 */
line-height : 1.15 ; /* 1 */
margin : 0 ; /* 2 */
}
/**
* Show the overflow in IE.
* 1. Show the overflow in Edge.
*/
button ,
input { /* 1 */
overflow : visible ;
}
/**
* Remove the inheritance of text transform in Edge, Firefox, and IE.
* 1. Remove the inheritance of text transform in Firefox.
*/
button ,
select { /* 1 */
text-transform : none ;
}
/**
* 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
* controls in Android 4.
* 2. Correct the inability to style clickable types in iOS and Safari.
*/
button ,
html [ type = "button" ] , /* 1 */
[ type = "reset" ] ,
[ type = "submit" ] {
-webkit-appearance : button ; /* 2 */
}
/**
* Remove the inner border and padding in Firefox.
*/
button :: -moz-focus-inner ,
[ type = "button" ]:: -moz-focus-inner ,
[ type = "reset" ]:: -moz-focus-inner ,
[ type = "submit" ]:: -moz-focus-inner {
border-style : none ;
padding : 0 ;
}
/**
* Restore the focus styles unset by the previous rule.
*/
button : -moz-focusring ,
[ type = "button" ]: -moz-focusring ,
[ type = "reset" ]: -moz-focusring ,
[ type = "submit" ]: -moz-focusring {
outline : 1 px dotted ButtonText ;
}
/**
* Correct the padding in Firefox.
*/
fieldset {
padding : 0.35 em 0.75 em 0.625 em ;
}
/**
* 1. Correct the text wrapping in Edge and IE.
* 2. Correct the color inheritance from `fieldset` elements in IE.
* 3. Remove the padding so developers are not caught out when they zero out
* `fieldset` elements in all browsers.
*/
legend {
box-sizing : border-box ; /* 1 */
color : inherit ; /* 2 */
display : table ; /* 1 */
max-width : 100 % ; /* 1 */
padding : 0 ; /* 3 */
white-space : normal ; /* 1 */
}
/**
* 1. Add the correct display in IE 9-.
* 2. Add the correct vertical alignment in Chrome, Firefox, and Opera.
*/
progress {
display : inline-block ; /* 1 */
vertical-align : baseline ; /* 2 */
}
/**
* Remove the default vertical scrollbar in IE.
*/
textarea {
overflow : auto ;
}
/**
* 1. Add the correct box sizing in IE 10-.
* 2. Remove the padding in IE 10-.
*/
[ type = "checkbox" ] ,
[ type = "radio" ] {
box-sizing : border-box ; /* 1 */
padding : 0 ; /* 2 */
}
/**
* Correct the cursor style of increment and decrement buttons in Chrome.
*/
[ type = "number" ]:: -webkit-inner-spin-button ,
[ type = "number" ]:: -webkit-outer-spin-button {
height : auto ;
}
/**
* 1. Correct the odd appearance in Chrome and Safari.
* 2. Correct the outline style in Safari.
*/
[ type = "search" ] {
-webkit-appearance : textfield ; /* 1 */
outline-offset : - 2 px ; /* 2 */
}
/**
* Remove the inner padding and cancel buttons in Chrome and Safari on macOS.
*/
[ type = "search" ]:: -webkit-search-cancel-button ,
[ type = "search" ]:: -webkit-search-decoration {
-webkit-appearance : none ;
}
/**
* 1. Correct the inability to style clickable types in iOS and Safari.
* 2. Change font properties to `inherit` in Safari.
*/
:: -webkit-file-upload-button {
-webkit-appearance : button ; /* 1 */
font : inherit ; /* 2 */
}
/* Interactive
========================================================================== */
/*
* Add the correct display in IE 9-.
* 1. Add the correct display in Edge, IE, and Firefox.
*/
details , /* 1 */
menu {
display : block ;
}
/*
* Add the correct display in all browsers.
*/
summary {
display : list-item ;
}
/* Scripting
========================================================================== */

/**
* Add the correct display in IE 9-.
*/

canvas {
display : inline-block ;
}

/**
* Add the correct display in IE.
*/
template {
display : none ;
}
/* Hidden
========================================================================== */
/**
* Add the correct display in IE 10-.
*/
[ hidden ] {
display : none ;
}

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转载自blog.csdn.net/weixin_39921345/article/details/78786284