16 This test checks that a null filter will not affect the rendering of the box at all.
17 There should be 13 green boxes on screen.
19 <div style="-webkit-filter: blur(0)"></div>
20 <div style="-webkit-filter: brightness(1)"></div>
21 <div style="-webkit-filter: invert(0)"></div>
22 <div style="-webkit-filter: contrast(1)"></div>
26 <div style="-webkit-filter: drop-shadow(0px 0px 0px rgba(0, 0, 0, 0))"></div>
27 <div style="-webkit-filter: grayscale(0)"></div>
28 <div style="-webkit-filter: hue-rotate(0)"></div>
29 <div style="-webkit-filter: invert(0)"></div>
33 <div style="-webkit-filter: opacity(1)"></div>
34 <div style="-webkit-filter: saturate(1)"></div>
35 <div style="-webkit-filter: sepia(0)"></div>
36 <div style="-webkit-filter: blur(0) grayscale(0)"></div>
40 <div style="-webkit-filter: grayscale(0) blur(0)"></div>