html
{
text-size-adjust: 100%;
-webkit-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
-moz-text-size-adjust: 100%;
@media screen and (min-width: 600px)　{phont-size:20pt;}
@media screen and (max-width: 599px)　{phont-size:30pt;}
background:white;
}

p
{
@media screen and (min-width: 600px)　{phont-size:50pt;}
@media screen and (max-width: 599px)　{phont-size:50pt;}
}