.box {
  background-color: gray;
  text-align: center;
  font-size: 25px;
  width: 500px;
  height: 300px;
  padding-top: 40px;
  margin: 10% auto;
}
.box > * {
  margin: 10px;
}
.index {
  color: black;
  text-align: center;
}
#verifyCanvas {
  position: relative;
  top: 8px;
  right: 8px;
}
input {
  height: 30px;
  font-size: 25px;
  width: 168px;
}
#code_input {
  width: 72px;
  position: relative;
  right: 8px;
}
#lable_test {
  position: relative;
  right: 20px;
}