Introduction - If you have any usage issues, please Google them yourself
1: Layer shuffle (relative positioning, absolute positioning, z-index-------- relative position of the parent div with position: relative, child div with absolute positioning position: absolute. When a given z-index value, the level of the floating layer began. positive 2, floating to the front, negative-2, floating to the back was blocked. For the two layers at the same level, when the z-index values appear, if you want to be block off part of the block layer to give it a top of the negative) 2: Background layer displacement (background-position:? px? px to set the value at any position can be moved.) 3: The floating layer after deformation under IE6 (to float: left layer to the value of the display: inline It' s that simple)