@charset "utf-8";
<style type="text/css">

/*Smartphone*/
@media screen and (max-width: 428px) {

/*CSS*/

 }

/*Tablet*/
@media only screen and (min-width: 600px) and (max-width: 1024px) {

/*CSS*/

 }

/*PC*/
@media screen and (min-width: 1024px) {

/*CSS*/

 }

</style>