style2.css

body {
    font-family: Arial, sans-serif;
    text-align: center;
}

body, nav, ul, li {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  /* Navbar styles */
  header {
    background-color: #000000;
    padding: 10px;
  }

  nav ul li {
    display: flex;
    margin-right: 10px;
    align-items: center;
    justify-content: center;
  }

  nav ul li a {
    text-decoration: none;
    color: #333;
    padding: 5px 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
  }

  nav ul li a:hover {
    background-color: #333;
    color: #fff;
  }

.calculator {
    width: 300px;
    margin: 0 auto;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #c0c0c0;
}

.calculator input {
    width: 100%;
    margin-bottom: 10px;
    padding: 10px;
    font-size: 18px;
    border: 1px solid #ccc;
    border-radius: 3px;
    box-sizing: border-box;
}

.calculator .buttons {
    width: 32%;
    padding: 10px;
    font-size: 18px;
    border: 4px solid black;
    border-radius: 3px;
    cursor: pointer;
    background-color: #ccc;
    margin-bottom: 5px;
    margin-right: 5px;
}

.calculator .m-buttons {
    width: 32%;
    padding: 10px;
    font-size: 18px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    background-color: #114761;
    color: white;
    margin-bottom: 5px;
    margin-right: 5px;
}

.calculator .signs {
    width: 32%;
    padding: 10px;
    font-size: 18px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    background-color: #1a78a4;
    color: white;
    margin-bottom: 5px;
    margin-right: 5px;
}

.calculator .clear {
    width: 32%;
    padding: 10px;
    font-size: 18px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    background-color: #b34700;
    color: white;
    margin-bottom: 5px;
    margin-right: 5px;
}

.calculator .number {
    width: 32%;
    padding: 10px;
    font-size: 18px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    background-color: white;
    color: black;
    margin-bottom: 5px;
    margin-right: 5px;
}


.calculator button:active {
    background-color: #aaa;
}

.row1 {
    display: flex;
    justify-content: space-evenly;
}

#display-button {
    background-color: #114761;
    color:white;
}