* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: JDZhengHT-EN-Regular, BlinkMacSystemFont,'Helvetica Neue',Helvetica,Segoe UI,Arial,Roboto,'PingFang SC',miui,'Hiragino Sans GB','Microsoft Yahei',sans-serif;
}

a,
img {
  display: block;
  border: 0;
}

input,
button {
  border: 0;
  outline: none;
}

em,
i {
  font-style: normal;
}