Probably a cascade bug. Try adding:
Code:
h2 span {font-family:"Myriad Pro Black", sans-serif;
font-size:4.167em;
font-weight:900;
line-height:1.2 ;
margin-top:0px;
text-transform:uppercase;
}
And if you can create a small, reproducible test case, please file a bug at
https://bugreport.apple.com/.