@media screen and (min-width:321px) and (max-width:375px){ html{font-size:11px} } @media screen and (min-width:376px) and (max-width:414px){ html{font-size:12px} } @media screen and (min-width:415px) and (max-width:639px){ html{font-size:15px} } @media screen and (min-width:640px) and (max-width:719px){ html{font-size:20px} } @media screen and (min-width:720px) and (max-width:749px){ html{font-size:22.5px} } @media screen and (min-width:750px) and (max-width:799px){ html{font-size:23.5px} } @media screen and (min-width:800px){ html{font-size:25px} }