.content {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  width: 100vw;
  height: 100vh;
}
.content .one {
  text-align: center;
}
.content .one .one_1 {
  margin: 2vw 0;
}
.content .one .one_1 text {
  display: inline-block;
  width: 50vw;
  height: 50vw;
  text-align: center;
  line-height: 50vw;
  border-radius: 90%;
  background-color: #000000;
  color: #ffffff;
  font-weight: bold;
  font-size: 30px;
  font-family: cursive;
}