Dawn Theme - Header does not hide anymore on scrolling down

[ivnv00]

Hello, guys. I made a series of CSS changes on my Dawn Theme Shopify website, in order to achieve a transparent header that blends with the image banner. Unfortunately, I could only manage to achieve half of what I wanted to do, since now the header stays in place when scrolling down, even if the sticky header setting is set to 'On scroll up'.

Here is the website link: www.trendlab.site

Here is the store password, in case you need it: gelyun

You can find a screen recording showcasing the issue on the following link: https://www.loom.com/share/7ed924cb62de4ab2a5e9bb4791b38378

Please help me, I tried to do it on my own, but I don't code and I have made a big error. Thank you in advance for your time!

[PaulNewton]

Always make backups of themes before changing files.

Try to rollback theme files

https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/edit-theme-code#roll-b...

The file rollback may not work for files in the themes /assets folder so get a fresh install of the theme and translate an unmodified copy of the original file into your broken themes suspected broken file.

And then to try and redo previous theme customizations use an online diff tool to compare the changes between the two files.

But this time for CSS related changes it's recommended to use the custom-css feature now available in themes to test potential changes before trying to modify files directly.

https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/add-css 

Beyond that you will need services to fix the damage done.

If you need this fixed then contact me directly for services.
Please provide context: store url, theme name, post url(s) and any further detail.
Contact Info in signature.

Good Hunting.