[RESOLVED] is inline styling considered a hack

[isnoend07]

i am new to css
i posted a css question on another site

move centered text 10px to the right that is inside a centered division
I did not get any answers, but found the solution myself eg;
<span class="sMedBoldBlue" style= "margin-left:10px">
this worked and validated
someone posted a comment that inline css is considerated a hack.
Is this true ?