body {background-color:beige}





.container {
    display: grid;
    grid-template-columns: 50px 50px 50px;
    grid-template-rows: 50px 50px 50px;
    border: 2px solid black;
    height: 150px;
    width: 150px;
    padding: 5px;
  }

.button {
    width: 50px;
    height: 50px;
    position: relative;
    
}