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CSS Knowledge Base ref. CSS 2.1
 Reset of Style in HTML to UA Default
 Example Using Embedded Object
  Inline Block
  Embeded <Object> Block
 Example Using Embedded Iframe

CSS Knowledge Base ref. CSS 2.1

Reset of Style in HTML to UA Default

Sometimes, the css properties of element modified by author may be needed to reset to the default values of a UA. Some possible solutions are.

Set all UA style rules as a new class and assign the new class property to all tagged elements that are to be reset to UA default styles.
Embedded all tagged elements in an object
Embedded all tagged elements in an iframe.

Example Using Embedded Object

Inline Block

Plain tag elements are embedded in a <div> block.

HTML Document Input:

<!--For html 4 compliant, presented here are included as remarks
<style>#test_a {background-color:red;}</style>
Rendering rules are placed on an embedded style sheet on the fly-->
<table border="1" align="center" width="250" 
 style=" border:1px solid black;-spacing:2px">
<tr>
<td class=" test_a">Apple</td>
<td>Orange</td>
</tr>
<tr>
<td>125</td>
<td>250</td>
</tr>
</table>

HTML Web Page In-line Output:

Apple	Orange
125	250

Embeded <Object> Block

Plain tag elements are embedded in an embedded object through a Data URLs

HTML Document Input:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
<title>Sample Page</title>
    </head>
    <body>
<table border="1" align="center" width="250" 
 style=" border:1px solid black;-spacing:2px">
<tr>
<td class=" test_a">Apple</td>
<td>Orange</td>
</tr>
<tr>
<td>125</td>
<td>250</td>
</tr>
</table>
    </body>
</html>

HTML Web Page Embedded Output:

Example Using Embedded Iframe

Plain tag elements are embedded in a <div> block.

HTML Document Input:

<!--For html 4 compliant, presented here are included as remarks
<style>#test_a {background-color:red;}</style>
Rendering rules are placed on an embedded style sheet on the fly-->
<table  border="1" align="center" width="250" 
style="border:1px solid black;-spacing:2px">
<tr>
<td class="test_a">Apple</td>
<td>Orange</td>
</tr>
<tr>
<td>125</td>
<td>250</td>
</tr>
</table>

HTML Web Page In-line Output:

Apple	Orange
125	250

Plain tag elements are embedded in an embedded iframe through a Data URLs

HTML Document Input:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
<title>Sample Page</title>
    </head>
    <body>
<table  border="1" align="center" width="250" 
style="border:1px solid black;-spacing:2px">
<tr>
<td class="test_a">Apple</td>
<td>Orange</td>
</tr>
<tr>
<td>125</td>
<td>250</td>
</tr>
</table>
    </body>
</html>

HTML Web Page Embedded Output:

©sideway

ID: 180200040 Last Updated: 2/26/2018 Revision: 0 Ref: