style.css

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f4f4f4;
}

.container {
    text-align: center;
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 90%;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    margin-top: 20px;
}

button:hover {
    background-color: #45a049;
}

#result {
    font-size: 24px;
    margin-top: 20px;
}

.coin {
    width: 100px;
    height: 100px;
    position: relative;
    perspective: 1000px;
    margin: 20px auto;
}

#side {
    width: 100%;
    height: 100%;
    position: absolute;
    backface-visibility: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    border-radius: 50%;
    background-color: gold;
    color: black;
    border: 2px solid #333;
}

#coin {
    transition: transform 2s; }

.flip {
    transform: rotateY(1800deg); 
}

/* Media Queries for Responsive Design */

/* For tablets */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .coin {
        width: 80px;
        height: 80px;
    }

    #side {
        font-size: 20px;
    }

    button {
        font-size: 14px;
        padding: 8px 16px;
    }

    #result {
        font-size: 20px;
    }
}

/* For mobile devices */
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    .coin {
        width: 60px;
        height: 60px;
    }

    #side {
        font-size: 16px;
    }

    button {
        font-size: 12px;
        padding: 6px 12px;
    }

    #result {
        font-size: 18px;
    }
}