Breadcrumb Title Bar and Sidebar on Portfolio Page

Hi,

I have the breadcrumb title bar “fixed” at the top of my Portfolio page which I like. However, a space appears above the bar as soon you scroll down. When the screen is reduced (i.e. on smaller devices), there is a large space/gap at the top of the breadcrumb bar. Can I remove this space/gap so that the breadcrumb bar sits flush at the bottom of the navigation bar and remains fixed? I would actually like it to have no space for both the web browser and the mobile devices.

Second, I have selected the left sidebar to display the Portfolio Projects (all the portfolio items). However, the sidebar won’t display on the page. How can I get the sidebar to display the Portfolio Projects widget (I created a widget named Projects, and added the portfolio items for that widget)? Page in question is posted below:

Thanks