Thanks for responses. I've decided to do some page 'restructuring' over the hols so that length of the pasted chart section is no longer an issue.

The problem is traced to line-height. Opera 26 seems not to read a px (or any other) line-height value as other browsers, at least as regards text copied from Notepad and pasted within pre /pre. I'm probably missing something simple.

gwen-dragon, thank you for your response.

The page is perhaps too long for a screenshot. I think the best way to demonstrate what I mean is to view the same page in another browser.

In Opera, the inserted section ends far short of the intended position, leaving a significant gap between it and the Calculator. None of the various parts of the chart line up as they should with 'repeater' menu boxes in the left column.

I have checked the page using two desktops and a tablet, and the problem is apparent on all. No doubt my code needs a tweek but attempts so far have failed to produce a remedy.

One of my webpages - http://www.urbanrim.org.uk/drop chart.htm - requires twice-weekly embedding of output from a computer program. When I designed the page (way back) I carefully aligned the embedded material within the rest of the page using:

pre {
color:#0f0f0f;
font: normal 1.0em courier new, courier, monospace;
line-height:18px;
margin:0px auto;
text-align:left;
width:740px;
}

The output is then copied and pasted between pre and /pre tags.

This works well on all browsers, including Opera - until recently.

Along comes v26.0 and the embedded section is too small in overall height. Alignment is lost.

Any suggestions?