Hi I have my portfolio looks awful on opera, everything is messed up like there is no CSS on it and I want to know why that happens. Note: I used an autoprefixer that adds prefixes for all browsers (https://autoprefixer.github.io/) I have added links to screenshots for my website on both opera and edge respectively.
my website: https://portfolio-yz.netlify.app/
opera screenshot: https://i.sstatic.net/YLrch.jpg
edge screenshot: https://i.sstatic.net/RJUzd.jpg
This is the problem with the web-hosting you are using , we know you are using netlify to host your website. try running your site on your local computer with some kind of server like xampp etc.
This will show if the issue is with your files or with the hosting itself. if your site works similar as it works on opera, then the problem is with your files. if your site works fine then you have to look after the webhosting your using.