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HTML centering

Windows : Internet Explorer 3.0+, Firefox 1.0+, Google Chrome, Opera 3.51 - 6.xx and 9.0+, Safari 3.1+, SeaMonkey 1.0+ [ 1 ].

Linux : Firefox 1.0+, Chromium, Opera 5.0 - 6.xx and 9.0+, SeaMonkey 1.0+ [ 2 ].

Centering the whole content of a web page in the viewable area of a browser by pure HTML - no CSS. A box to keep the content of the page is HTML centered horizontally and vertically - [ Open demo page ]

HTML. Code:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<title>HTML centering</title>

<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">

</head>

<body bgcolor="#ffffff">

<table width="100%" height="100%" bgcolor="#a3ddc4">

<tr>

<td align="center">

<table width="800" height="500" bgcolor="#ff6f6f">

<tr>

<td>&nbsp;</td>

</tr>

</table>

</td>

</tr>

</table>

</body>

</html>

The outer HTML table makes the whole web browser viewable area, except margins, a HTML table and the whole area of this HTML table - a HTML table cell.

The cell of the outer HTML table inherits the default value for valign attribute from its parent table row. And this row in its turn inherits the default value for valign attribute from the outer HTML table tbody - even if tbody tag is not used. And that value is middle. So a block of content inside the cell of the outer HTML table is centered vertically in web browser viewable are.

Align="center" of the outer HTML table cell makes a block of content inside it centered horizontally in web browser viewable are.

The inner table, the one inside of the outer HTML table cell makes up a box of a given size. Or there may be no set height or no set width or both. Then the size of the box is to adjust to accommodate the content, whatever its dimensions are. If the width or height or both of the box results to be larger than web browser viewable area, then it still ends up to be centered.

Since HTML centering is the oldest method to center content horizontally and vertically, it works well not just in older web browsers, but in ones that can be described as downright ancient. Like adding one more HTML tag ( <center></center> ) around the outer table makes it funcion as deep as Internet Explorer 3 : [ Open demo page ]

Download Internet Explorer 3: a pack, containing 3.0, 4.01, 5.01, 5.5, 6.0 versions of Internet Explorer

HTML. Code:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<title>HTML centering for Internet Explorer 3</title>

<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">

</head>

<body bgcolor="#ffffff">

<!-- For Internet Explorer 3 --><center><!-- For Internet Explorer 3 -->

<table width="100%" height="100%" bgcolor="#a3ddc4">

<tr>

<td align="center">

<table width="800" height="500" bgcolor="#ff6f6f">

<tr>

<td>&nbsp;</td>

</tr>

</table>

</td>

</tr>

</table>

<!-- For Internet Explorer 3 --><center><!-- For Internet Explorer 3 -->

</body>

</html>

HTML horizontal and vertical centering of a box containing web page content has become obsolescent as a result of semantic markup spread. But it is still reliable. Not only in the major and modern web browsers, but in many alternative and older ones as well.

There is a minor flaw in it though. The height attribute of the <table><table/> tag is used there. It is supported for years by the majority of web browsers, but is incompatible with the standards promoted by World Wide Web Consortium (W3C). So the code does not pass W3C validation. Back in 1990s - early 2000s, it was complicated or impossible to succeed in making a code both valid and working in the majority of web browsers, so the flaw was not looked at as a real problem.


[ 1 ]

As well as Netscape 2.02 - 4.80 and Offbyone. There is some shift of page content to the top left corner of the web browser viewable area in Netscape 2.02 - 4.80, since these web browsers reserve the place for scrollbars.

[ 2 ]

As well as Netscape 2.02 - 4.80. There is some shift of page content to the top left corner of the web browser viewable area in Netscape 2.02 - 4.80, since these web browsers reserve the place for scrollbars.


Aliosque subditos et thema

 

CSS for a range of elements

 

Styling a range of elements. Here from the 1st to the 3rd one - changing background color. Example:         HTML / XHTML. Code: <div>&nbsp;</div> <div>&nbsp;</div> <div>&nbsp;</div> <div>&nbsp;</div> CSS. Code: div:nth-of-type(-n+3) {background: #f66;} /* Extra CSS, just styling the look: */ div {width: 100%; margin-top: 5px; background: #066;} Note: nth-child may also be used instead.

ELinks. Configuration

 

Jump to: ELinks - Text-based or console web browser. Description: features, screenshots, download links. ELinks. Use - How to use ELinks. What ELinks can and what can not, i.e. what may be configured depends on several things. The most common are capability of the console it is run on and support of what was chosen during the compilation process of an ELinks browser source code. Under certain operating systems (Windows for instance) it is easier and more reliable to omit some possible features. The configuration of ELinks 0.12pre2 from Package Database of Zenwalk Linux (originally based on Slackware, still keeping compatibility with its binary packages) is discussed here. It is quite representative in its qualities among other Linux ELinks browser versions for desktop PC computers. User interface of Windows ELinks and that of Linux / some other *nix systems ELinks of comparable versions are the same. If an ELinks package has been compiled without some feature or the console is not capable of something then it just will not be possible to choose the feature in the configuration process; or possible, but it will not work. For example, if this ELinks is compiled without support of 256 colors or your console is not capable of displaying them, then it just will only be possible to choose 16 or "No colors (mono)" in the menu. And the ELinks will work as much well in the rest. The whole configuration of ELinks may be done through the menu of the browser - there is no need to edit config files. Even if some fine-tuning may require editing of elinks.conf or even source code files - but that is not the issue for average use. The menu of ELinks is hidden when it is displaying a web page: To access the menu, press Esc on the keyboard: Configuration options are in "Setup" group: 1 ) "Language" - set a language of ELinks user interface. It is possible to set it to the system language or to several others. System and terminal emulator / console have to be prepared for this change - corresponding localization / internationalization files installed and configured. Choose a language (English in this example): To keep it, press Esc again, then Setup, then Save options, then confirm by clicking OK.