### Content of 'WebArea' component with text 'body content'
B1[:]<button>Light button</button>
B2[:]<button>Shadow button</button>
I1[:]<input aria_label="Shadow input"></input>
B3[:]<button>Nested shadow button</button>
I2[:]<input aria_label="Nested shadow input"></input>
B4[:]<input type="checkbox"></input>
_[:]Nested shadow checkbox
