7th-star asked:

Hi, the theme that i'm using in my page isn't yours, I had tried to ask to the owner to help me, but he/she didn't answer me, so please help me. The problem is that when I scroll down with the scrollbar, the sidebar doesn't scroll down, and I want that the sidebar scrolls down with the posts.

Unfortunately there could be a lot of factors dealing with this. Often time this is effected by external scripts.

Make sure you copied and pasted the full code.

Try removing your description, saving it somewhere, and having a blank description to see if it’s a script or unclosed HTML that is effecting it.