Hi ,

I just checked for button. 

I believe that the class

 .dataValueWrite {
    text-align: left 
}

might be causing the issue , to confirm you can check by overriding this as 

.dataValueWrite {
    text-align: center ! important;
}

this is just for confirmation anad not solution.

If yes then see the markup of the button and if it is a button tag (html) then apply below css:

button {
    text-align: center !important;
}

similarly check for the other controls