MARGIN 1
Dear, as you see my wordings are all next to the side of screen... huhhu, no space at all huh? ;p This page has been set as "topmargin=0 leftmargin=0", that means that whatever u put or type will be next to the side of screen, including images/pics. If there're no margins, the screen's width(width of 100%) will touch the end of left screen.(maximum width)
See this blue line. The width of the line is 100%, and it touches the left side end of screen.
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