Blog, How to fix sidebar

Add CSS

 

1) position:fixed; 

#sidebar-left-1 {left: 0; position: fixed;}
#sidebar-right-1 {left: 0; position: fixed;}
#sidebar-left-2-1 {left: 0; position: fixed;}
#sidebar-left-2-2 {left: 0; position: fixed;} 

 

2) position:fixed; + position

#sidebar-left-1 {left: 0px; top: 20px; position: fixed;}
#sidebar-right-1 {left: 150px; top: -28px; position: fixed;}
#sidebar-left-2-1 {left: 0px; top: 80px; position: fixed;}
#sidebar-left-2-2 {left: 150px; top: 80px; position: fixed;}


 

or,


.sidebar { position: sticky; top: 0; }