网页手机横屏竖屏下字体在大小不一样

@media screen and (max-device- 320px) {body {-webkit-text-size-adjust:none}}
@media screen and (max-device- 480px) {body {-webkit-text-size-adjust:none}}
@media only screen and (-webkit-min-device-pixel-ratio: 2) {body {-webkit-text-size-adjust:none}}
@media only screen and (min-device- 768px) and (max-device- 1024px) {body {-webkit-text-size-adjust:none}}
a {color:#3c3f46;text-decoration:none;}