前端清除项目默认样式拿去即用

Posted 2022-11-10 水香木鱼

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专栏：项目优化

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📒技术聊斋

（一）创建normalize.scss

在src/assets路径下创建normalize.scss 或者后缀为.less 的样式文件

/*! normalize.css v8.0.1 | 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 ios.
 */
 /* div的默认样式不存在padding和margin为0的情况*/
 html, body, div, span, applet, object, iframe,
 h1, h2, h3, h4, h5, h6, p, blockquote, pre,
 a, abbr, acronym, address, big, cite, code,
 del, dfn, em, img, ins, kbd, q, s, samp,
 small, strike, strong, sub, sup, tt, var,
 b, u, i, center,
 dl, dt, dd, ol, ul,
 fieldset, form, label, legend,
 table, caption, tbody, tfoot, thead, tr, th, td,
 article, aside, canvas, details, embed, 
 figure, figcaption, footer, header, hgroup, 
 menu, nav, output, ruby, section, summary,
 time, mark, audio, video 
   margin: 0;
   padding: 0;
   font-size: 100%;
   font: inherit;
   vertical-align: baseline;
 
 /* HTML5 display-role reset for older browsers */
 article, aside, details, figcaption, figure, 
 footer, header, hgroup, menu, nav, section 
   display: block;
 
 html 
    line-height: 1.15; /* 1 */
    -webkit-text-size-adjust: 100%; /* 2 */
  
  
  /* Sections
     ========================================================================== */
  
  /**
   * Remove the margin in all browsers.
   */
  
  body 
    margin: 0;
    background-color: #f7f7f7;
    font-family: 'Microsoft YaHei';
    font-size: 15px;
  
  
  /**
   * Render the `main` element consistently in IE.
   */
  
  main 
    display: block;
  
  
  /**
   * Correct the font size and margin on `h1` elements within `section` and
   * `article` contexts in Chrome, Firefox, and Safari.
   */
  
  
  /* Grouping content
     ========================================================================== */
  
  /**
   * 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
     ========================================================================== */
  
  /**
   * Remove the gray background on active links in IE 10.
   */
  
  a 
    background-color: transparent;
    text-decoration: none;
  

  
  /**
   * 1. Remove the bottom border in Chrome 57-
   * 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 */
  
  
  /**
   * 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 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
     ========================================================================== */
  
  /**
   * Remove the border on images inside links in IE 10.
   */
  
  img 
    display: block;
    border-style: none;
  
  
  /* Forms
     ========================================================================== */
  
  /**
   * 1. Change the font styles in all browsers.
   * 2. Remove the margin in Firefox and Safari.
   */
  
  button,
  input,
  optgroup,
  select,
  textarea 
    font-family: inherit; /* 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;
  
  
  /**
   * Correct the inability to style clickable types in iOS and Safari.
   */
  
  button,
  [type="button"],
  [type="reset"],
  [type="submit"] 
    -webkit-appearance: button;
  
  
  /**
   * 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-width: 100%; /* 1 */
    padding: 0; /* 3 */
    white-space: normal; /* 1 */
  
  
  /**
   * Add the correct vertical alignment in Chrome, Firefox, and Opera.
   */
  
  progress 
    vertical-align: baseline;
  
  
  /**
   * Remove the default vertical scrollbar in IE 10+.
   */
  
  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 in Chrome and Safari on macOS.
   */
  
  [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 Edge, IE 10+, and Firefox.
   */
  
  details 
    display: block;
  
  
  /*
   * Add the correct display in all browsers.
   */
  
  summary 
    display: list-item;
  
  
  /* Misc
     ========================================================================== */
  
  /**
   * Add the correct display in IE 10+.
   */
  
  template 
    display: none;
  
  
  /**
   * Add the correct display in IE 10.
   */
  
  [hidden] 
    display: none;
  

  ul, li  list-style: none; 

（二）main.js 文件内引入

import "./normalize.scss";//清除默认样式

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