如何仅为div和所有嵌套元素重置所有样式？我已经尝试了以下所有解决方案，但它们都没有为我工作。我做错了什么？
我尝试过使用下面的所有三个css类，但没有一个删除背景。
Reset/remove CSS styles for element only
这是我的代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestResetCSS.aspx.cs" Inherits="TestResetCSS.TestResetCSS" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style>
.remove-all-styles {
all: initial;
}
.yui3-cssreset html{color:#000;background:#FFF}.yui3-cssreset body,.yui3-cssreset div,.yui3-cssreset dl,.yui3-cssreset dt,.yui3-cssreset dd,.yui3-cssreset ul,.yui3-cssreset ol,.yui3-cssreset li,.yui3-cssreset h1,.yui3-cssreset h2,.yui3-cssreset h3,.yui3-cssreset h4,.yui3-cssreset h5,.yui3-cssreset h6,.yui3-cssreset pre,.yui3-cssreset code,.yui3-cssreset form,.yui3-cssreset fieldset,.yui3-cssreset legend,.yui3-cssreset input,.yui3-cssreset textarea,.yui3-cssreset p,.yui3-cssreset blockquote,.yui3-cssreset th,.yui3-cssreset td{margin:0;padding:0}.yui3-cssreset table{border-collapse:collapse;border-spacing:0}.yui3-cssreset fieldset,.yui3-cssreset img{border:0}.yui3-cssreset address,.yui3-cssreset caption,.yui3-cssreset cite,.yui3-cssreset code,.yui3-cssreset dfn,.yui3-cssreset em,.yui3-cssreset strong,.yui3-cssreset th,.yui3-cssreset var{font-style:normal;font-weight:normal}.yui3-cssreset ol,.yui3-cssreset ul{list-style:none}.yui3-cssreset caption,.yui3-cssreset th{text-align:left}.yui3-cssreset h1,.yui3-cssreset h2,.yui3-cssreset h3,.yui3-cssreset h4,.yui3-cssreset h5,.yui3-cssreset h6{font-size:100%;font-weight:normal}.yui3-cssreset q:before,.yui3-cssreset q:after{content:''}.yui3-cssreset abbr,.yui3-cssreset acronym{border:0;font-variant:normal}.yui3-cssreset sup{vertical-align:text-top}.yui3-cssreset sub{vertical-align:text-bottom}.yui3-cssreset input,.yui3-cssreset textarea,.yui3-cssreset select{font-family:inherit;font-size:inherit;font-weight:inherit}.yui3-cssreset input,.yui3-cssreset textarea,.yui3-cssreset select{*font-size:100%}.yui3-cssreset legend{color:#000}#yui3-css-stamp.cssreset-context{display:none}
.reset-this {
animation : none;
animation-delay : 0;
animation-direction : normal;
animation-duration : 0;
animation-fill-mode : none;
animation-iteration-count : 1;
animation-name : none;
animation-play-state : running;
animation-timing-function : ease;
backface-visibility : visible;
background : 0;
background-attachment : scroll;
background-clip : border-box;
background-color : transparent;
background-image : none;
background-origin : padding-box;
background-position : 0 0;
background-position-x : 0;
background-position-y : 0;
background-repeat : repeat;
background-size : auto auto;
border : 0;
border-style : none;
border-width : medium;
border-color : inherit;
border-bottom : 0;
border-bottom-color : inherit;
border-bottom-left-radius : 0;
border-bottom-right-radius : 0;
border-bottom-style : none;
border-bottom-width : medium;
border-collapse : separate;
border-image : none;
border-left : 0;
border-left-color : inherit;
border-left-style : none;
border-left-width : medium;
border-radius : 0;
border-right : 0;
border-right-color : inherit;
border-right-style : none;
border-right-width : medium;
border-spacing : 0;
border-top : 0;
border-top-color : inherit;
border-top-left-radius : 0;
border-top-right-radius : 0;
border-top-style : none;
border-top-width : medium;
bottom : auto;
box-shadow : none;
box-sizing : content-box;
caption-side : top;
clear : none;
clip : auto;
color : inherit;
columns : auto;
column-count : auto;
column-fill : balance;
column-gap : normal;
column-rule : medium none currentColor;
column-rule-color : currentColor;
column-rule-style : none;
column-rule-width : none;
column-span : 1;
column-width : auto;
content : normal;
counter-increment : none;
counter-reset : none;
cursor : auto;
direction : ltr;
display : inline;
empty-cells : show;
float : none;
font : normal;
font-family : inherit;
font-size : medium;
font-style : normal;
font-variant : normal;
font-weight : normal;
height : auto;
hyphens : none;
left : auto;
letter-spacing : normal;
line-height : normal;
list-style : none;
list-style-image : none;
list-style-position : outside;
list-style-type : disc;
margin : 0;
margin-bottom : 0;
margin-left : 0;
margin-right : 0;
margin-top : 0;
max-height : none;
max-width : none;
min-height : 0;
min-width : 0;
opacity : 1;
orphans : 0;
outline : 0;
outline-color : invert;
outline-style : none;
outline-width : medium;
overflow : visible;
overflow-x : visible;
overflow-y : visible;
padding : 0;
padding-bottom : 0;
padding-left : 0;
padding-right : 0;
padding-top : 0;
page-break-after : auto;
page-break-before : auto;
page-break-inside : auto;
perspective : none;
perspective-origin : 50% 50%;
position : static;
/* May need to alter quotes for different locales (e.g fr) */
quotes : '\201C' '\201D' '\2018' '\2019';
right : auto;
tab-size : 8;
table-layout : auto;
text-align : inherit;
text-align-last : auto;
text-decoration : none;
text-decoration-color : inherit;
text-decoration-line : none;
text-decoration-style : solid;
text-indent : 0;
text-shadow : none;
text-transform : none;
top : auto;
transform : none;
transform-style : flat;
transition : none;
transition-delay : 0s;
transition-duration : 0s;
transition-property : none;
transition-timing-function : ease;
unicode-bidi : normal;
vertical-align : baseline;
visibility : visible;
white-space : normal;
widows : 0;
width : auto;
word-spacing : normal;
z-index : auto;
}
.dashBackgroundColor {
background: #ccd3e0;
}
</style>
</head>
<body>
<div class="dashBackgroundColor">
<div class="remove-all-styles">
<form id="form1" runat="server">
<div>
<span>testing</span>
</div>
</form>
</div>
</div>
</body>
</html>
答案 0 :(得分：0)
你还没有将这个类重新设置为任何div。 assign reset-this class to remove-all-styles class div
<div class="dashBackgroundColor">
<div class="remove-all-styles reset-this">
<form id="form1" runat="server">
<div>
<span>testing</span>
</div>
</form>
</div>
</div>