.center {
          display: flex;
          justify-content: center;
          align-items: center;
          height: 200px;
          border: 1px solid; 
        }
        button{
            width: 150px;
            word-wrap: normal;
            height: 50px;
        }
        .box{
            width: 75px; 
            /*border: 1px solid red;*/
        }
        .minus{
            width: 25px; 
            height: 25px;
        }