calculator.css

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f2f2f2;
  }
  
  .calculator {
    background-color: #130a0a;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(62, 22, 22, 0.1);
    width: 300px;
    margin-top: 50px;
  }
  
  input {
    width: 90%;
    padding: 15px;
    margin-bottom: 15px;
    font-size: 24px;
    border: 1px solid #3b3535;
    border-radius: 10px;
  }
  
  .buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 10px;
  }
  
  .button {
    padding: 15px;
    font-size: 20px;
    border: 1px solid #0c3561;
    border-radius: 5px;
    cursor: pointer;
    background-color: #916a2b;
    transition: background-color 0.3s ease; /* Add transition for smooth color change */
  }
  
  .button:hover {
    background-color: #235b60;
  }