firefox不支持background-position-xbackground-position-y，使用background-position:5px5px; ...

.HalfPixelLine{background:repeat-xtoplefturl("data:image/svg+xml;utf8,<svgxmlns='http://www.w3.org/2000/svg'width='1'height='1'><rectfill='red'x='0'y='...