@media only screen and (min-width: 300px) and (max-width : 639px) {
body {
	font-size:75%;
}
}
@media only screen and (min-width: 640px) and (max-width: 1023px) {

}
@media only screen and (min-width: 1024px) and (max-width: 1279px) {

}
@media only screen and (min-width: 1280px) and (max-width: 1700px) {

}