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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def style_similarity(page1, page2):
 """ Computes CSS style Similarity between two DOM trees A = classes(Document_1) B = classes(Document_2) style_similarity = |A & B| / (|A| + |B| - |A & B|) :param page1: html of the page1 :param page2: html of the page2 :return: Number between 0 and 1. If the number is next to 1 the page are really similar. """

    classes_page1 = get_classes(page1)
    classes_page2 = get_classes(page2)
    return jaccard_similarity(classes_page1, classes_page2)