容器未为子div调整大小

Question

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As you can see from the picture, my parent container is not expanding to fit my child container. The page container (#contain) actually stops at the bottom left hand corner of the kitchen photograph. The child container (#zone2) is clearly overflowing outside its parent container (#contain). I would like to be able to have (#contain) expand automatically to fit (#zone2). The CSS is:

#contain {
    position: relative;
    width: 100%;
    margin: 0 px;
    background: #E3DCCC;
    z-index: 0;
}

#zone1 {
    width: 100%;
    height: 850px;
    background: url(http://waly1039.com/sites/default/files/k4.jpg) no-repeat center   top;
    position: absolute;
    z-index: -1;
}
#head {
    position: absolute;
    top: 20px;
    width: 100%;
    height: 330px;
}

#head img {
    max-width: auto;
    height: auto;
}

#zone2 {
    position: relative;
    overflow: hidden;
    padding: 3px;
    top: 360px;
    float: right;
    right: 15px;
    width: 53%;
    height: auto;
    border: 4px solid #715E40;
    background-color: white;
}
#zone2 img {
      max-width:100%;
      height: auto;
      float:left;
      margin: 5px;
}

#zone3 {
    position: relative;
    top: 710px;
    left: 15px;
    float: left;
    height: 340px;
    width: 38%;
    border: 4px solid #715E40;
    background-color: white;
} 

Answer 1

This is a float issue. Try adding the traditional CSS clear fix to #zone2's container:

.container:after{
  visibility: hidden;
  display: block;
  font-size: 0;
  content: " ";
  clear: both;
  height: 0;
}

Be sure to put this in the :after pseudo selector, otherwise it won't work for you. Floated elements exist outside of normal document flow, which is why the container isn't expanding to contain them. The clear fix forces the floats to be cleared, which will cause the container to expand around the bottom of this element.

Answer 2

I tested adding more images to #zone2 and #contain expands vertically. Somehow you've got an element(s) in #zone2 with padding or margins that aren't being added to the parent's total height.

If you want a quick fix in order to move on then add margin-bottom: 30px; to #zone2 .

Answer 3

I've duplicated your problem and was able to resolve it with this: You might want to try it. It's looks a bit odd so make a class for it if you like. I'm more concern with where it is placed.

Just beneath lines of your code, add my third line. Just that and you are done. Note, it more about positioning.

<div id="zone3"></div>
<div id="zoneclear"></div>
<br style="clear:both; float:none; display:block; height:1px;" />

Just add the third line.

and just modify one of your styles:

#zoneclear {   
    clear: both;
    float:none;
    display:block;  
    height: 30px;
    position: relative;
}

[EDIT] The codes have a serious bug in firefox which is not present in Google Chrome (that I tested in earlier due to your relative positioning. So I've modified the #zoneclear style to fix that. You might have to test if the other browsers like this hack.

I hope it helps you