You may have copied it wrong here. It should be body {padding:0px；; font: 12px "π" }

# lib _ tab 1 { width:430 px； Margin: 0px Fill: 0px Margin-Bottom:15px; }

This is redundant, as long as the above items are enough. The specific styles are: width 430 pixels, margin 0 pixels, padding 0 pixels, bottom margin 15 pixels.

. Lib_tabborder{} This style has nothing.

. lib _ Menubox { height:28px； Line height: 28px position: relative; }

This is 28 pixels high, and the font line is also 28 pixels high, which means that the font should be centered at 28 pixels. Taking the frame of this style as the coordinate origin, position:relative is relative positioning, which can also be used to locate the origin.

. lib _ Menubox ul { margin:0px； Fill: 0px List Style: None; Location: absolute; top:3px； Left: 0; Left margin:10px; Height: 25px Text Alignment: Center; }

Ul margins in. Lib_Menubox frame is 0px, filled with 0px; Don't use the small black dot in front, make an absolute positioning of the origin just now, with the upper distance of 3px and the left distance of 0px.

. lib _ Menubox Li { float:left； Display: block; Cursor: pointer; Width:114px; Color: # 949694; Font thickness: bold; Right margin: 2px height: 25px line height: 25px background color: #E4F2FD}

Li zai. lib_Menubox

Floating to the left, display:block This element will be displayed as a block-level element with line breaks before and after it.

Sursor: Only when the mouse moves to this block will the pointer become a hand. The font color 949694 is unknown, the font is bold, the right margin is 2 pixels, the height is 25 pixels, and the line height is 25 pixels. The background color e4f2fd doesn't know what color.

. lib _ Menubox Li . hover { padding:0px； Background: # fff width:116px; border-left: 1px solid # 95c9e 1； border-top: 1px solid # 95c9e 1； border-right: 1px solid # 95c9e 1； Color: # 739242; Height: 25px Line height: 25px

}

White fills 0px, the background color fff is white, and the width is 1 16 pixels. Left border 1 pixel, solid line, line color 95c9e 1 unknown; The top border 1 pixel, with the same color left and right. What a hassle! Since the colors are all the same, just write border:1pxsolid # 95c9e1; Border-bottom:none just doesn't need a bottom border, so it's more troublesome. The font color is 739242, the height is 25 pixels, and the line height is 25 pixels.

. lib _ content box { clear:both； Margin-Top: 0px Border Top: None; Height:181px; Text alignment: centered; padding-top:8px； }

Clear floating, no floating left and right, no border, height 18 1 pixel, text content in the center, white filled with 8 pixels, gone,

These have to be used with a frame to be effective, just a style.