def css():
"""Assert.css"""
html = Assert("""
<div id="maincontent">
<div class="container">
<p>Hello World</p>
</div>
</div>
""")
html.css('#maincontent .container p')[0].text == 'Hello World'
with Assert.raises(AssertionError):
html.css('#maincontent .container p')[0].text != 'Hello World'
