body {
        user-select: none; /* Prevents text selection */
        -webkit-user-select: none; /* Chrome/Safari */
        -moz-user-select: none; /* Firefox */
    }

    /* Disable keyboard shortcuts for 'Ctrl+U' (view source), 'Ctrl+S' (save page), etc. */
    window.onkeydown = function (e) {
        if (e.ctrlKey && (e.key === 'u' || e.key === 's' || e.key === 'i' || e.key === 'p')) {
            e.preventDefault();
        }
    };