fix(snack-bar): button not centered inside snack bar on IE11 (#13062)
fix(snack-bar): button not centered inside snack bar on IE11 (#13062)

Fixes the snack bar's button appearing off-center on IE11. The flex styling that has been removed isn't necessary anymore after the recent design changes.
mmalerba/material2,crisbeto/material2,DevVersion/material2,crisbeto/material2,DevVersion/material2,jelbourn/material2,jelbourn/material2,angular/components,angular/components,Jefiozie/material2,crisbeto/material2,DevVersion/material2,josephperrott/material2,DevVersion/material2,Jefiozie/material2,mmalerba/material2,andrewseguin/material2,Jefiozie/material2,Jefiozie/material2,andrewseguin/material2,angular/components,josephperrott/material2,jelbourn/material2,angular/components,andrewseguin/material2,josephperrott/material2,andrewseguin/material2,mmalerba/material2,josephperrott/material2,DevVersion/material2,jelbourn/material2,crisbeto/material2,andrewseguin/material2,josephperrott/material2,mmalerba/material2,jelbourn/material2,mmalerba/material2,Jefiozie/material2