@media 手机与IPAD与PC

@media screen and (min-width: 769px) {
bindCard{height:28.5em}
}

@media screen and (min-device-width: 641px) and (max-device-width: 768px) {
.bindCard{height:28.5em}
}

@media screen and (min-device-width: 401px) and (max-device-width: 640px) {
.bindCard{height:14.5em}
}

@media only screen and (max-device-width: 400px) {
.bindCard{height:13.5em}
}