Retiring, March 2020 - sorry, you have missed our final public course.
The Coronavirus situation has lead us to suspend public training - which was on the cards anyway, with no plans to resume
Please ask about private 'maintenance' training for Python, Tcl, Perl, PHP, Lua, etc
Happily continuing private consultancy / programming work
CSS Style Diagrams - working out where attributes come from
I have just been helping a customer who's got a problem with white text on a white background ... and hasn't been able to easily identify where the problem lies. Some of his code looks like this:
<div align="center" class="style11 style13">
<div align="left" class="style17">
<span class="style12">[Phone no]</span>
And I found myself struggling as well! The solution is to draw up a diagram showing the nesting and where each of the relevant attributes is sourced from ... filling in a table that looks something like this:
That will then give him (or me or you) a firm foundation on which to edit the source and experiment to confirm the analysis, which it turn will lead on towards a solution. I suspect the problem will become quickly apparent!
I made one further little suggestion - is there any way he could rename some of his styles? Using words like "style17" doesn't make them very self-descriptive, and so it is very easy for logic errors to slip in. In fact, I suspect that the customer's problem relates to the style called "style11 style13" which may be a typo. We tend to use words like "bodytext" and "headline" for our styles, and it makes the analysis much easier.
- Caitlinn says ...
... "style11 style13" means that they are applying both style11 AND style13 to the div and it is correct syntax for combining classes.
That is one serious case of div-itis. Any way they could use HTML elements rather than so many divs? That too would help them to better understand their layout and probably cut down on the use of some many styles. (written 2009-06-08, updated 2009-06-09)
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articlesW509 - Web and Intranet - Style 
Flipping images on your web page - (2008-01-26) 
The new web site look spreads - (2007-01-15) 
span and div tags - a css comparison - (2007-01-02)W704 - Web and Intranet - Cascading style sheets - putting it all together 
Cascading Style Sheets and formatting your web page - (2013-03-10) 
CSS training - Cascading Style Sheets (UK course) - (2008-06-15) 
Setting your colour theme through PHP - (2006-12-17) 
Training on Cascading Style Sheets - (2006-12-17) 
Using PHP to output images, XML, Style sheets, etc - (2006-01-15) 
.css - using PHP to make dynamic style sheets - (2005-11-21)
Some other Articles
Learning PHP, Ruby, Lua and Python - upcoming coursesRevision / Summary of lists - PerlHow important is a front page ranking on a search engine?Trowbridge - a missed opportunity? Melksham - into the breach?CSS Style Diagrams - working out where attributes come fromA (biased?) comparison of PHP courses in the UKAdding a newsfeed for your users to a multipage PHP applicationMelksham Traders - where do we go?Configuring httpd, or Tomcat, to run CGI scripts in PerlMultiple web applications under Tomcat - what are the options?
4759 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per page
This is a page archived from The Horse's Mouth at
the diary and writings of Graham Ellis.
Every attempt was made to provide current information at the time the
page was written, but things do move forward in our business - new software
releases, price changes, new techniques. Please check back via
our main site for current courses,
prices, versions, etc - any mention of a price in "The Horse's Mouth"
cannot be taken as an offer to supply at that price.
Link to Ezine home page (for reading).
Link to Blogging home page (to add comments).