aaa/rest/templates/button-style.tpl

<style>
.button-resize { font-size: 80%; }
@media screen and (min-width:35.5em){
    .button-resize { font-size: 80%; }
}
@media screen and (min-width:40em){
    .button-resize { font-size: 85%; }
}
@media screen and (min-width:64em){
    .button-resize { font-size: 100%; }
}
@media screen and (min-width:80em){
    .button-resize { font-size: 110%; }
}
</style>