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OK got it, thanks.

Nevermind! All sorted. My syntax was incorrect. To edit only table 25, it needs to read:

.tablepress-id-25 .row-1 td,
.tablepress-id-25 .row-3 td,
.tablepress-id-25 .row-5 td {
	color:red;
}

Edit: Upon further review, the above CSS code is affected *all* of my tables. I think I have some incorrect syntax which has this code applied to all of my tables instead of only table #25.

OK thanks for the info. I think I’m beginning to understand.

>> the size of the header is variable depending on the size on the device it is displayed on

OK I understand this. But can I calculate/look up *exactly how* the header size changes with device? For example, if my monitor is displaying at a resolution of 1366×768, how big will the header be? Is this standard information that I can look up somewhere, or does it vary per theme?

OK thanks for that. I think you’re saying that, because the theme is responsive, changing the header image to a slider is difficult. If so, is this something I can expect from most (or all?) responsive themes?

I did, but have heard nothing ?? The perils of relying on other people’s (free) work I guess.

I found my theme’s setup function (see below), and it appears that the theme is trying to fetch (display?) a header image of size 1280 x 416. But when I upload an image of that size, and the web page is displayed on my screen, the image (and containing element) are of size 1214 x 243. Furthermore, the image is cropped on top and bottom, and scaled in the x-direction. Here are the setup function arguments:

// Custom header
	$args = array(
		'width'         => 1280,
		'height'        => 416,
		'default-image' => get_template_directory_uri() . '/images/header.jpg',
		'uploads'       => true,
		'header-text'  	=> false

Any ideas why this is happening?

FWIW, my site is https://www.panyadee.ac.th/test/

OK thanks, I thought that might be the case. So the instruction, “Images of exactly 1280 × 416 pixels will be used as-is,” is something from WordPress, but also something that can be overridden by a theme?

Great thanks. I read the FAQ on the WP forums, but I didn’t know the other FAQ existed. I’ll read through it.

Thanks.

Thanks for that.

>> please try to search before you post questions on the forum

I did, but still did not find a resolution to my issue. I even found the link you posted and attempted to follow the directions, but encountered a problem.

>> Your question all depends on the individual theme and template.

This is the information I was looking for, thanks. The WOW instructions do not explicitly indicate that this is theme-dependent. They merely say, “…add this php code into your header…into the place where you want your slider to appear,”

OK thanks.

I understand how to resolve this issue. I’d like to know why I’m experiencing it in the first place. I’ve been able to carry out such uploads for 2 months now without issue. Is this something I can prevent in the future?

Thanks. Got it sorted.