css calculat height dynamically code example

Example 1: css calc height

div {
	width: calc(100% - 100px);
}

Example 2: css height auto vs 100

<div style="height:50px">
    <div id="innerDiv" style="height:auto">
          <div id="evenInner" style="height:10px">
          </div>
    </div>
</div>