Add sidebar to showthread in mybb template
<div style=“display:inline-block;width:60%”>insert showthread contents here</div>
<div style=“display:inline-block;width:35%”>insert sidebar content here</div>
<div style=“display:inline-block;width:35%”>insert sidebar content here</div>
Name's Waleed, I'm a graphic and web design (2015) graduate from Canada. Self-employed and lending my design skills to the MyBB community.