html,body{
  margin: 0;
  padding: 0;
  font-size: .28rem;
  color:#333;
  text-align: justify;
}
div,a{
  box-sizing: border-box;
}
a,a:hover,a:active,a:visited,a:link,a:focus {
   -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
   -webkit-tap-highlight-color: transparent;
   outline: none;
   background: none;
   text-decoration: none;
   color:inherit;
}
p{
  margin: 0;
}
h1{
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}
.relative{
  position: relative;
}
.flex{
  display: flex;
  flex-direction: row;
  align-items: center;
}
.flex.center{
  justify-content: center;
}
.flex.between{
  justify-content: space-between;
}
.bold{
  font-weight: bold;
  font-family: PingFangSC, PingFangSC-Medium;
}