好多网站css样式初始化代码,仅自留

腾讯QQ官网

body,ol,ul,h1,h2,h3,h4,h5,h6,p,th,td,dl,dd,form,fieldset,legend,input,textarea,select{margin:0;padding:0} 
body{font:12px"宋体","Arial Narrow",HELVETICA;background:#fff;-webkit-text-size-adjust:100%;} 
a{color:#2d374b;text-decoration:none} 
a:hover{color:#cd0200;text-decoration:underline} 
em{font-style:normal} 
li{list-style:none} 
img{border:0;vertical-align:middle} 
table{border-collapse:collapse;border-spacing:0} 
p{word-wrap:break-word}

新浪官网

body,ul,ol,li,p,h1,h2,h3,h4,h5,h6,form,fieldset,table,td,img,div{margin:0;padding:0;border:0;} 
body{background:#fff;color:#333;font-size:12px; margin-top:5px;font-family:"SimSun","宋体","Arial Narrow";} 
 
ul,ol{list-style-type:none;} 
select,input,img,select{vertical-align:middle;} 
 
a{text-decoration:none;} 
a:link{color:#009;} 
a:visited{color:#800080;} 
a:hover,a:active,a:focus{color:#c00;text-decoration:underline;}

淘宝官网

body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { margin:0; padding:0; } 
body, button, input, select, textarea { font:12px/1.5tahoma, arial, \5b8b\4f53; } 
h1, h2, h3, h4, h5, h6{ font-size:100%; } 
address, cite, dfn, em, var { font-style:normal; } 
code, kbd, pre, samp { font-family:couriernew, courier, monospace; } 
small{ font-size:12px; } 
ul, ol { list-style:none; } 
a { text-decoration:none; } 
a:hover { text-decoration:underline; } 
sup { vertical-align:text-top; } 
sub{ vertical-align:text-bottom; } 
legend { color:#000; } 
fieldset, img { border:0; } 
button, input, select, textarea { font-size:100%; } 
table { border-collapse:collapse; border-spacing:0; }

网易官网

html {overflow-y:scroll;} 
body {margin:0; padding:29px00; font:12px"\5B8B\4F53",sans-serif;background:#ffffff;} 
div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,blockquote,p{padding:0; margin:0;} 
table,td,tr,th{font-size:12px;} 
li{list-style-type:none;} 
img{vertical-align:top;border:0;} 
ol,ul {list-style:none;} 
h1,h2,h3,h4,h5,h6{font-size:12px; font-weight:normal;} 
address,cite,code,em,th {font-weight:normal; font-style:normal;}

京东

@charset "utf-8";
/* CSS Document */
/* 京东的css重置 20140721 */
html,body,div,span,iframe,
h1,h2,h3,h4,h5,h6,p,
blockquote,pre,a,address,big,cite,code,del,em,font,img,ins,small,strong,var,b,u,i,center,
dl,dt,dd,ol,ul,li,
fieldset,form,label,legend{margin:0;padding:0;}
ol,ul{list-style:none;}
:focus{outline:0;}
a img{border:0;}
img{vertical-align:middle;}
table{empty-cells:show;}
ins{text-decoration:none;}
del{text-decoration:line-through;}
em{font-style:norma;}
button::-moz-focus-inner,
input[type=reset]::-moz-focus-inner,
input[type=button]::-moz-focus-inner,
input[type=submit]::-moz-focus-inner,
input[type=file]>input[type=button]::-moz-focus-inner{border:0;padding:0;}

还有一个

/* necolas  Document
   ========================================================================== */

/**
 * 1. Correct the line height in all browsers.
 * 2. Prevent adjustments of font size after orientation changes in iOS.
 */

html {
    line-height: 1.15;
    /* 1 */
    -webkit-text-size-adjust: 100%;
    /* 2 */
}

/* Sections
     ========================================================================== */

/**
   * Remove the margin in all browsers.
   */

body {
    margin: 0;
}

/**
   * 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.
   */

h1 {
    font-size: 2em;
    margin: 0.67em 0;
}

/* 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;
}

/**
   * 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 {
    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;
}

/*
aliyun.css
*/
HTML, body, div, h1, h2, h3, h4, h5, h6, ul, ol, dl, li, dt, dd, p, blockquote,
pre, form, fieldset, table, th, td {
    border:none;
    font-family:"微软雅黑","黑体","宋体";
    font-size:14px;
    margin:0px;
    padding:0px;
    }
html,body{
    height: 100%;
    width: 100%;
    }
address, caption, cite, code, dfn, em, strong, th, var {
    font-style: normal;
    font-weight: normal;
}
a{
    text-decoration:none;
}
a:link{
    color:#fff;
}
a:visited{
    color:#fff;
}
a:hover{
    color:#fff;
}
a:active{
    color:#fff;
}
input::-ms-clear{
    display:none;
    }
input::-ms-reveal{
    display:none;
}
input{
    -webkit-appearance: none;
    margin: 0;
    outline: none;
    padding: 0;
}
input::-webkit-input-placeholder{
    color: #ccc;
}
input::-ms-input-placeholder{
    color: #ccc;
}
input::-moz-placeholder{
    color: #ccc;
}
input[type=submit],input[type=button]{
    cursor: pointer;
}
button[disabled], input[disabled] {
    cursor: default;
}
img{
    border:none;
}
ul,ol,li{
    list-style-type:none;
}
/*公共方法*/
.clear{
    clear: both;
}
.clearleft{
    clear: left;
}
.clearright{
    clear: right;
}
.floatleft{
    float: left;
}
.floatright{
    float: right;
}
.cursor{
    cursor: pointer;
}
/*背景及色值表*/
.bg000{
    background: #000;
}
.color000{
    color: #000;
}

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转载自blog.csdn.net/qq_38652871/article/details/88907256