In CSS, it is possible to escape characters to use them in class name. For example if you want a class name that starts with a digit, say "1st", it is totally valid to escape it, ending with a CSS selector .\31 st (notice the space inside a selector that only indicates the end of escaping sequence). Then you can use it normally, as <div class="1st" />. The same applies to SVG, and it happens for example when SVG files are being exported from Adobe Illustrator with "unique classnames" option.
In CSS, it is possible to escape characters to use them in class name. For example if you want a class name that starts with a digit, say "1st", it is totally valid to escape it, ending with a CSS selector
.\31 st(notice the space inside a selector that only indicates the end of escaping sequence). Then you can use it normally, as<div class="1st" />. The same applies to SVG, and it happens for example when SVG files are being exported from Adobe Illustrator with "unique classnames" option.The loader fails to add a prefix to selector in