Whole page shifting left when I define a <p> width.

[gunzelguy]

OK, I know I'm asking this question because I'm an absolute beginner when it comes to CSS but here goes.

Many of the pages on my website (older ones created with GoLive) Are just <p> <img> <p> <img> and on and on.

A page I am working on is all nice and centred and then I select a <p> and go "edit rule" and go to box and  change it from auto to 800px. I do this so the text doesn't go all the way across the page which makes it hard to read. When I hit apply it changes the box but the whole page goes from being centered to being left justified. Everything on the page is up against the left border. What on earth is going on?

[Nancy OShea]

Review the CSS Box model.

https://www.w3schools.com/css/css_boxmodel.asp

You didn't mention which property you changed so it's impossible to comment.  For better answers, show us your code.

[gunzelguy]

The property I changed was <p> Box width, I changed it from auto to 800px wide.

Here is a link to the page.

https://www.victorianrailways.net/photogallery/suburb/sandingham_line/sandringham_line.html

[Nancy OShea]

There is no such CSS property as box-width or box width. 

Perhaps you mean CSS box-sizing? 

In any case, the URL you posted contains neither.

[gunzelguy]

I am selecting a <p>  then going to Properties>CSS>Edit rule the following dialog appears

Which I change to this:

[Nancy OShea]

CSS Definition for body, td, th is not the paragraph tag.  It's the whole enchilada.

You have effectively reduced entire page width to 800px and removed centering.  Don't do that.

[BenPleysier]

My personal opinion is that you should port your site over to Bootstrap. I live in Mt Eliza and, if you are closeby, give me call - 0431363276