Align Text in Table header after rotating it 90 or 270 degree

I had rotated the header text in a table but now the problem is, I am not able to center it.

My Css:

and My Html Table

    

        
Secondlongheadear
        
        
        
Secondlongheadear
        
        
Second long headear
        
        
Test Secondlongheadear
        
        
 Testing Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Test of Second long headear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
        
Secondlongheadear
        
    
    

      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
foo
      
      
foo
      
foo
      
foo
      
foo
      
foo
      
      
foo
      
foo
      
foo
      
foo
      
foo
      
      
foo
      
foo
      
foo
      
foo
      
foo
      
      
foo
      
foo
      
foo
      
foo
      
foo