Div height percentage based but still scrolling

Question

First off, similar but never answered questions:

vertically-scrolling-percentage-based-heights-vertical-margins-codepen-exampl

scroll-bar-on-div-with-overflowau

Answer 1

You want something like This

Or maybe - his big brother..

Pure CSS solution, without fixing any height.

HTML:

CSS:

*
{
    margin: 0;
    padding: 0;
}

html, body, .Container
{
    height: 100%;
}

    .Container:before
    {
        content: '';
        height: 100%;
        float: left;
    }

.First
{
    /*for demonstration only*/
    background-color: #bf5b5b;
}

.Second
{
    position: relative;
    z-index: 1;
    /*for demonstration only*/
    background-color: #6ea364;
}

    .Second:after
    {
        content: '';
        clear: both;
        display: block;
    }

.Content
{
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: auto;
}