CSS incompatibility background-position is not compatible in Firefox, and incorrect image position occurs. IE6 and IE7 force selector.

1. You only need to add the HTML {Height: 100%;} to the style.

2. In some cases, if IE is incompatible, you can use * HTML (style name) {CSSCode}, You can forcibly select IE6 execution; Use the * + HTML style name {CSS code} to forcibly select IE7;

3. Many other incompatibility issues are solved only when they occur.

IE debugging tools: firebug, iecollection, ietest, httpwatch, dugbar, and Fiddler.

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