pure css to realize 100% height

pure css 100% height

body,html{
height:100%;}
#outerbox{
    width:100%;
    position:absolute;   /* to place it somewhere on the screen */
    top:130px;           /* free space at top */
    bottom:0px;}         /* makes it lock to the bottom */
#innerbox{
    width:100%;
    position:absolute;              
    min-height:100% !important; /* browser fill */
    height:auto;}        /*content fill */