ie6: * html { }
ex.
* html p { text-align: center; }
ie7: *+ html { }
ex.
*+ html p { text-align: center; }
ie7 aka underscore hack: . _classname { }
ex.
_maketextcenter { text-align:center; }
ie8: {property:\[value];}
ex.
p {color:\#f00;}
opera: @media all and (min-width: 0px) { }
ex.
@media all and (min-width: 0px) { text-align: center; }
ie6 how to make div smaller in height?
solution: adjust the font size
ex.
.divname { font-size: 10px; }
