cal.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  
  :root {
    --primary-color: rgb(61, 164, 243);
  }
  
  
  body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
  }
  
  
  .container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    width: 300px;
    padding: 20px;
    text-align: center;
  }
  
  /* Style the calculator title */
  .container h1 {
    font-size: 24px;
    text-decoration: underline;
    margin-bottom: 10px;
  }
  
  
  input {
    width: 100%;
    padding: 10px;
    font-size: 18px;
    text-align: right;
    border: none;
    border-bottom: 2px solid #ccc;
    margin-bottom: 10px;
    outline: none;
  }
  
  
  .buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
  }
  
  
  button {
    font-size: 18px;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: #f0f0f0;
    transition: background-color 0.3s;
  }
  
  
  .operator {
    background-color: var(--primary-color);
    color: white;
  }
  
 
  button:hover {
    background-color: #ccc;
  }
  
  /* Style the equals button */
  #equals {
    grid-column: span 4;
    background-color: var(--primary-color);
    color: white;
  }
  
  
  #clear {
    background-color: #ff4444;
    color: white;
  }
  

.operator {
    background-color: var(--primary-color);
    color: rgb(84, 2, 2);
  }
  

  button:hover {
    background-color: #ccc;
  }
  
  
  #equals {
    grid-column: span 4;
    background-color: var(--primary-color);
    color: white;
  }
  
  
  #clear {
    background-color: #e60a0a;
    color: white;
  }