.title-block{text-align:left}.subtitle{font-size:1.4rempx;font-weight:700;margin:0 0 8px}.main-title{font-size:4rem;font-weight:800;margin:0 0 8px}.description{color:#333;font-size:16px}@media screen and (max-width:768px){.subtitle{font-size:1.2rem}.main-title{font-size:2.4rem;line-height:1.3}}