styles.css

body {
    font-family: 'Helvetica', sans-serif;
    background-image: url('https://www.pixelstalk.net/wp-content/uploads/2016/06/Best-HD-Backgrounds-Photos-Download.jpg'); /* Replace 'background.jpg' with the path to your image */
    background-size: cover; /* Adjust the size of the background image to cover the entire viewport */
    background-position: center; /* Center the background image */
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.calculator {
    background-color: rgba(51, 51, 51, 0.5); /* Set the calculator background color with an alpha value for transparency */
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
}

.display {
    width: 100%;
    height: 60px;
    font-size: 24px;
    text-align: right;
    padding: 10px;
    margin-bottom: 10px;
    border: none;
    border-radius: 5px;
    background-color: #444444;
    color: white;
}

.buttons {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-gap: 10px;
}

button {
    width: 100%;
    height: 60px;
    font-size: 18px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: rgba(51, 51, 51, 0.5); /* Set the button background color with an alpha value for transparency */
    color: white; /* Set text color to white for better visibility */
}

.operator {
    background-color: #333333;
    color: white;
}

.special {
    background-color: #FFD700;
    color: black;
}

.clear {
    background-color: green;
    color: white;
}

.backspace {
    background-color: blue;
    color: white;
}

.equals {
    background-color: black;
    color: white;
}

.end {
    background-color: red;
    color: white;
}

.grey {
    background-color: grey;
    color: white;
}