how to fix a block in a location? I'm using Drupal 7 with Bootstrap 3.3.5 as a theme.
I built an English version of my website and now I'm working on Arabic version which means RTL(right to left). 

When I switch to Arabic, some block's location change to right or left, I'm asking if it's possible to fix the block location? If you have any suggestion about this RTL problems it will be welcome, thank you.
Your theme doesn't support RTL layout.

You need to either RTLize (flip) the CSS of your theme or replacing to a theme that does support RTL.

BT 3.0 doesn't support RTL (though there are plans to make BT 4.0 RTL supportive).

A good Drupal base theme that does support is AdavptiveTheme 8, which is also lighter in code amount.