@media only screen and (min-width:320px) and (max-width:348px){
html{font-size: 30%}
.div-main{line-height: 114%}
footer section article p{font-size: 1.8rem}
.div-main nav ul li:nth-child(4){width: 19.6%}
}
@media only screen and (min-width:349px) and (max-width:370px){
html{font-size: 31.5%}
.div-main{line-height: 120%}
.div-main nav ul li:nth-child(4){width: 19.6%}
}
@media only screen and (min-width:371px) and (max-width:480px){
html{font-size: 35%}
.activity .right section dl{line-height: 137%}
.div-main{line-height: 170%}
.div-main nav ul li:nth-child(4){width: 19.6%}
}
@media only screen and (min-width:320px) and (max-width:378px){
html{font-size: 30%}
.kst-div .wechat-content p span{font-size: 2rem}

}