Guide in html and css

Hi everyone, i need guidance in where i can learn advanced concepts of css and html, i can make basic layouts now and want enhance my knowledge to new level
like yesterday i learn frosted glass effect from a book css secrets. any sort of help shall be welcome.

try looking at documentation, like devdocs.io , or blogs that specialise in CSS and share articles on tips and tricks and cool effects

As you get more advanced, there are no longer a lot of broad resources. You start looking for resources that go in-depth into the area that you are researching.