html - Difference between height 100% in FireFox and everyone else -


i'm trying make several nested containers stretch fill page. know there ton's of questions , answers out there , every 1 has different answer none explain why behavior exists.

basically @ arbitrary point "height:100%" stops functioning , have switch on "min-height:100%" , if happen have both present layout massively screwed up.

i have solution works in ie11, ff(latest), , chrome(latest) , 1 works in others doesn't work in ff , can't tell why.

here jsfiddle explaining it, but i'd note jsfiddles display behavior doesn't match browsers @ all i'm going try , write out code. https://jsfiddle.net/2xa8rvek/

basically here's happens. place big block of content in center not scroll when window large enough scroll when window height reduced. observe different behavior based on color shown.

i call senario a when scrollbar shown , window scrolled half way down. call senario b when page height large enough bottom of text block shown.

document

<html> <body>     <div id="content-container">         <div id="page-specific-container">             <div class="content-middle">                 arbitrary amount of content goes here force screen re-size if user wasn't full screen.              </div>                   </div>     </div> </body> </html> 

css

* {     -webkit-box-sizing: border-box;     -moz-box-sizing: border-box;     box-sizing: border-box; }  body, html{     margin: 0;     padding: 0;     font-size: 16pt;         width: 100%;     height: 100%;     background: blue; }  #content-container{     padding-top: 45px; /* navigation */     height: 100%;     background: red; }  #page-specific-container{     /* @ point "height" property alone no longer works scrolling */     /* firefox requires "height: 100%" present or else .content-middle tag doesn't work */     min-height: 100%;     background: yellow; }  .content-middle{     /* if "height:" referenced here @ break layout */     min-height: 100%;     background:purple; } 

here's rundown of behavior:

-- height: 100% #page-specific-container , .content-middle

------- scenario show blue strip @ bottom.

------- scenario b show purple way down.

-- min-height: 100% #page-specific-container , .content-middle

------- scenario shows purple in browsers.

------- scenario b shows yellow in ff shows purple in other browsers.

-- min-height: 100% , height: 100% #page-specific-container , min-height:100%; .content-middle

------- scenario show purple way down.

------- scenario b show purple way down.

-- min-height: 100% , height: 100% both #page-specific-container , .content-middle

------- scenario show blue color.

------- scenario b show purple only.

why ff behave differently? why there random depth height: 100% no longer works?

edit: note format of layout breaks flexbox inside #page-specific-container


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