Notes on Min-height in CSS

Method One:
min-height:160px; Set Object box's minimum height, Firefox, ie7+ applicable;
Height:auto!important;

Set Object box height without auto-positioning, using!important to prioritize the lower height positioning setting;
height:160px; Set the height of the object, this property is only IE6 recognized because of the!important applied on the property.
Method Two:
min-height:160px; Set Object box's minimum height, Firefox, ie7+ applicable;
Height:auto; Set Object box height is not automatically determined;
_height:160px; Set the object height, this property is only IE6, and under IE6 This property overrides the Auto property.

The Float property cannot be used in a min-height container, otherwise it will be invalidated. If used in a large container, float is finally cleared internally, as an example:

<p id= "Content" >  <p id= "left" ></p>  <p id= "right" ></p> <p class= "Clear" > </p></p>