@media only screen and (max-width :767px){
.timetable th, .timetable td{padding:5px;height:auto;font-size:90%}
}
@media only screen and (max-width :599px){
.timetable th, .timetable td{font-size:80%}
}
@media only screen and (max-width :320px){
.timetable th, .timetable td{font-size:70%}
}