.small_span{font-size:14px}.large_span{font-size:18px}.smaller_span{font-size:12px}.normal_span{font-size:16px}@media (max-width:400px){.small_span{font-size:11px}.large_span{font-size:15px}.smaller_span{font-size:9px}.normal_span{font-size:13px}}