Site Report

This tab shows pages that do not comply with W3C standards.

Priority	Description and URL	Guideline and Line#	Count
Priority 1 6 issues on 1 pages
	An `img` element must have an `alt` attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.	HTML5	1 pages

	https://diplomy-grups24.com/	Line 333
	Attribute `jstcache` not allowed on element.	HTML5	1 pages

	https://diplomy-grups24.com/	Line 21
	Consider avoiding viewport values that prevent users from resizing documents.	HTML5	1 pages

	https://diplomy-grups24.com/	Line 6
	Invalid CSS `url()` value.	CSS Validation	1 pages

	`content: data:image/png;` `content: data:image/png;` https://diplomy-grups24.com/	Line 322 323
	Start tag `body` seen but an element of the same type was already open.	HTML5	1 pages

	https://diplomy-grups24.com/	Line 23
	The `center` element is obsolete. Use CSS instead.	HTML5	1 pages

	https://diplomy-grups24.com/	Line 331
Priority 2 1 issues on 1 pages
	Start tag seen without seeing a doctype first. Expected `<!DOCTYPE html>`.	HTML5	1 pages

	https://diplomy-grups24.com/	Line 1
Informative These messages are for information only and do not indicate errors or conformance problems
	Property or at-rule is vendor specific.	CSS Validation	1 pages
	Properties and at-rules prefixed by a dash or underscore, the zoom property and the expression() function are vendor specific and only work on one browser engine.
	`-webkit-text-size-adjust` `-webkit-user-select` https://diplomy-grups24.com/	Line 110 316
	Expand all 8 issues

Priority 1