.square {
    height: 300px;
    width: 500px;
    background-color: #555;
    margin-left:50px;
    position: absolute;
    float: none;
  }
  input[type="button"] 
  {
      width:100%;
  }
  #text { 
      background-color:white; 
      border: solid black 2px; 
      width:100%;
      height:100%;
      text-align:right;
  }
  #table1{
      width:100%;
      height:100%;
  } 
  button{
      width:100%;
      height:100%;
  }
  #history{
      position: relative;
      float: right;
      width: 33.33%;
      /*padding: 50px;*/
  }
  #delete{
      height:5%;
      width:20%;

  }
  #squere 
  {
      width:50%;
  }
  #exponent
  {
      float: right;
      width: 50%;
  }