bootstrap的normalize.less

/*! normalize.css v3.0.3 | MIT License | github.com/necolas/normalize.css */

//

// 1. Set default font family to sans-serif.

// 2. Prevent iOS and IE text size adjust after device orientation change,

//    without disabling user zoom.

//

html{

font-family:sans-serif;// 1

-ms-text-size-adjust:100%;// 2

-webkit-text-size-adjust:100%;// 2

}

//

// Remove default margin.

//

body{

margin:0;

}

// HTML5 display definitions

// ==========================================================================

//

// Correct `block` display not defined for any HTML5 element in IE 8/9.

// Correct `block` display not defined for `details` or `summary` in IE 10/11

// and Firefox.

// Correct `block` display not defined for `main` in IE 11.

//

article,

aside,

details,

figcaption,

figure,

footer,

header,

hgroup,

main,

menu,

nav,

section,

summary{

display:block;

}

//

// 1. Correct `inline-block` display not defined in IE 8/9.

// 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.

//

audio,

canvas,

progress,

video{

display:inline-block;// 1

vertical-align:baseline;// 2

}

//

// Prevent modern browsers from displaying `audio` without controls.

// Remove excess height in iOS 5 devices.

//

audio:not([controls]) {

display:none;

height:0;

}

//

// Address `[hidden]` styling not present in IE 8/9/10.

// Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.

//

[hidden],

template{

display:none;

}

// Links

// ==========================================================================

//

// Remove the gray background color from active links in IE 10.

//

a{

background-color:transparent;

}

//

// Improve readability of focused elements when they are also in an

// active/hover state.

//

a:active,

a:hover{

outline:0;

}

// Text-level semantics

// ==========================================================================

//

// Address styling not present in IE 8/9/10/11, Safari, and Chrome.

//

abbr[title] {

border-bottom:1pxdotted;

}

//

// Address style set to `bolder` in Firefox 4+, Safari, and Chrome.

//

b,

strong{

font-weight:bold;

}

//

// Address styling not present in Safari and Chrome.

//

dfn{

font-style:italic;

}

//

// Address variable `h1` font-size and margin within `section` and `article`

// contexts in Firefox 4+, Safari, and Chrome.

//

h1{

font-size:2em;

margin:0.67em0;

}

//

// Address styling not present in IE 8/9.

//

mark{

background:#ff0;

color:#000;

}

//

// Address inconsistent and variable font size in all browsers.

//

small{

font-size:80%;

}

//

// Prevent `sub` and `sup` affecting `line-height` in all browsers.

//

sub,

sup{

font-size:75%;

line-height:0;

position:relative;

vertical-align:baseline;

}

sup{

top:-0.5em;

}

sub{

bottom:-0.25em;

}

// Embedded content

// ==========================================================================

//

// Remove border when inside `a` element in IE 8/9/10.

//

img{

border:0;

}

//

// Correct overflow not hidden in IE 9/10/11.

//

svg:not(:root) {

overflow:hidden;

}

// Grouping content

// ==========================================================================

//

// Address margin not present in IE 8/9 and Safari.

//

figure{

margin:1em40px;

}

//

// Address differences between Firefox and other browsers.

//

hr{

box-sizing:content-box;

height:0;

}

//

// Contain overflow in all browsers.

//

pre{

overflow:auto;

}

//

// Address odd `em`-unit font size rendering in all browsers.

//

code,

kbd,

pre,

samp{

font-family:monospace,monospace;

font-size:1em;

}

// Forms

// ==========================================================================

//

// Known limitation: by default, Chrome and Safari on OS X allow very limited

// styling of `select`, unless a `border` property is set.

//

//

// 1. Correct color not being inherited.

//    Known issue: affects color of disabled elements.

// 2. Correct font properties not being inherited.

// 3. Address margins set differently in Firefox 4+, Safari, and Chrome.

//

button,

input,

optgroup,

select,

textarea{

color:inherit;// 1

font:inherit;// 2

margin:0;// 3

}

//

// Address `overflow` set to `hidden` in IE 8/9/10/11.

//

button{

overflow:visible;

}

//

// Address inconsistent `text-transform` inheritance for `button` and `select`.

// All other form control elements do not inherit `text-transform` values.

// Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.

// Correct `select` style inheritance in Firefox.

//

button,

select{

text-transform:none;

}

//

// 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`

//    and `video` controls.

// 2. Correct inability to style clickable `input` types in iOS.

// 3. Improve usability and consistency of cursor style between image-type

//    `input` and others.

//

button,

htmlinput[type="button"],// 1

input[type="reset"],

input[type="submit"] {

-webkit-appearance: button;// 2

cursor:pointer;// 3

}

//

// Re-set default cursor for disabled elements.

//

button[disabled],

htmlinput[disabled] {

cursor:default;

}

//

// Remove inner padding and border in Firefox 4+.

//

button::-moz-focus-inner,

input::-moz-focus-inner{

border:0;

padding:0;

}

//

// Address Firefox 4+ setting `line-height` on `input` using `!important` in

// the UA stylesheet.

//

input{

line-height:normal;

}

//

// It's recommended that you don't attempt to style these elements.

// Firefox's implementation doesn't respect box-sizing, padding, or width.

//

// 1. Address box sizing set to `content-box` in IE 8/9/10.

// 2. Remove excess padding in IE 8/9/10.

//

input[type="checkbox"],

input[type="radio"] {

box-sizing:border-box;// 1

padding:0;// 2

}

//

// Fix the cursor style for Chrome's increment/decrement buttons. For certain

// `font-size` values of the `input`, it causes the cursor style of the

// decrement button to change from `default` to `text`.

//

input[type="number"]::-webkit-inner-spin-button,

input[type="number"]::-webkit-outer-spin-button{

height:auto;

}

//

// 1. Address `appearance` set to `searchfield` in Safari and Chrome.

// 2. Address `box-sizing` set to `border-box` in Safari and Chrome.

//

input[type="search"] {

-webkit-appearance: textfield;// 1

box-sizing:content-box;//2

}

//

// Remove inner padding and search cancel button in Safari and Chrome on OS X.

// Safari (but not Chrome) clips the cancel button when the search input has

// padding (and `textfield` appearance).

//

input[type="search"]::-webkit-search-cancel-button,

input[type="search"]::-webkit-search-decoration{

-webkit-appearance:none;

}

//

// Define consistent border, margin, and padding.

//

fieldset{

border:1pxsolid#c0c0c0;

margin:02px;

padding:0.35em0.625em0.75em;

}

//

// 1. Correct `color` not being inherited in IE 8/9/10/11.

// 2. Remove padding so people aren't caught out if they zero out fieldsets.

//

legend{

border:0;// 1

padding:0;// 2

}

//

// Remove default vertical scrollbar in IE 8/9/10/11.

//

textarea{

overflow:auto;

}

//

// Don't inherit the `font-weight` (applied by a rule above).

// NOTE: the default cannot safely be changed in Chrome and Safari on OS X.

//

optgroup{

font-weight:bold;

}

// Tables

// ==========================================================================

//

// Remove most spacing between table cells.

//

table{

border-collapse:collapse;

border-spacing:0;

}

td,

th{

padding:0;

}

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