.container{
  position: fixed;
  background-color: #fff;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  flex-direction: column;
}
ul,
li {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
}
.password-div {
  padding-top: 50px;
}
.password-div input {
  width: 1px;
  height: 1px;
  opacity: 0;
  border: 0;
}
.password-lable {
  height: 40px;
  clear: both;
}
.password-lable li {
  float: left;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  border: 1px solid #dedede;
  margin-left: -1px;
}
.yuan {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #000;
}
.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}