• normalize.css可以对css初始化,不同浏览器可以统一初始样式


    /*! 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: 2em;
      margin: 0.67em 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: 1em 40px;
    }
    
    /**
     * 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: 1em
      /* 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: 1em
      /* 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: -0.25em;
    }
    
    sup {
      top: -0.5em;
    }
    
    /* 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"],
    [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: 1px dotted ButtonText;
    }
    
    /**
     * Correct the padding in Firefox.
     */
    fieldset {
      padding: 0.35em 0.75em 0.625em;
    }
    
    /**
     * 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- 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: -2px
      /* 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,
    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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  • 原文地址:https://www.cnblogs.com/wade1220/p/7384932.html
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