*{box-sizing: border-box;}

main img, main video, main iframe {
    max-width: 100%;
    display: block;
}



body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f8ff;
}

/* For mobile devices */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    header, main, footer {
        padding: 10px;
    }
}

/* For tablets */
@media (min-width: 601px) and (max-width: 1024px) {
    body {
        padding: 20px;
    }

    header, main, footer {
        padding: 20px;
    }
}

/* For desktops */
@media (min-width: 1025px) {
    body {
        padding: 30px;
    }

    header, main, footer {
        padding: 30px;
    }
}

/*Grid layout*/
main {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
section {
    background-color: #ffffff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}