def make_img_links(img_list, height='500px', width=None):
    """
    given the image link list, converts it into markdown.

    Note: uses either height or width, but not both b/c images
    can become out of proportion if we use both
    """
    contents = []
    for img_link in img_list:
        if width is not None:
            contents.append(f'<img src="{img_link}" width="{width}"></img>')
        else:
            contents.append(f'<img src="{img_link}" height="{height}"></img>')
    return '\n'.join(contents)