*{
  box-sizing: border-box;
  top: 0;
  margin: 0;
}
body{
  background-color: rgb(166, 197, 98);
}


.one,.two,.three,.four,.five,.six,.seven,.eight,.nine{
  border: 1px solid black;
  height: 100px;
  width: 100px;
  float:left;
  font-size: 70px;
  text-align: center;
}
.one,.four,.seven{
  clear: left;
  border-left: none;
}
.main{
  text-align: center;
  /* justify-content: center; */
  /* margin: 90px 20px 50px 90px; */
  /* margin: auto; */
  align-items: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-153.2px) translateY(-153.2px);

  /* transform-origin: center; */
  /* border: 2px solid black; */

}

.one,.two,.three{
  border-top: none;
}

.three, .six,.nine{
  border-right: none;
}

.seven,.eight,.nine{
  border-bottom: none;
}