style.css

.calcContainer {
    overflow-x: auto;
    width: 350px;
    margin: 0 auto;
    border: 1px solid black;
    border-radius: 5px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 25px;
  }

  .calcDisplay {
    padding: 30px;
    border-bottom: 1px solid black;
    text-align: right;
  }

  .calcButtons {
    padding: 15px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 15px;
  }
  
  .equal-sign {
    background-color: rgb(166, 231, 67)!important;
    color: white!important;
  }

  .buttonLarge {
    grid-column: 1 / span 3;
    color: black;
    background-color: rgb(241, 150, 134)!important;
    color: white!important;
  }

  .buttonMedium {
    grid-column: 1 / span 2;
    color: black;
    background-color: rgb(241, 150, 134)!important;
    color: white!important;
  }


  .calcButton {
    background-color: #757474;
    color: #d6d6d6;
    padding: 20px;
    border-radius: 5px;
    transition: background-color 0.3s;
    cursor: pointer;
  }
  .calcButton:hover {
    background-color: rgb(136, 127, 116);
  }