@media only screen and (max-width :992px){.c-heading .section-title span{font-size:30px}}@media only screen and (max-width :768px){.c-hinh-anh .c-heading .section-title span{font-size:20px}.c-gioi-thieu .c-heading .section-title span{font-size:24px}}@media only screen and (max-width :480px){.c-hoi-dap .accordion .accordion-title span{color:#444;font-size:14px}.c-btn{width:130px;height:42px}.c-hinh-anh .c-heading .section-title span{font-size:13px}.c-gioi-thieu .c-heading .section-title span{font-size:18px}}