The vertical height scrollbar will automatically show up when a margin-top is added

My HTML:

div.container

My CSS:

html, body {
  height: 100%;
  background-color: red;
  padding-left: 0px;
  padding-right: 0px;
}    
.container {
  height: 100%;
  background-color: blue;
  margin-top: 5px;
  *zoom: 1;
}

I am looking to achieve a specific effect in my layout without using overflow=hidden. How can I achieve this with the properties mentioned above?

Imagine the following scenario:

* The body has a red background
* There is a container div within the body that should have a top margin of "x" pixels
* The color of the container div is blue
* No scrollbars and no need for overflow="hidden"

I am seeking advice on how to implement this design. Can you help me accomplish this?

htmlcss

Answer №1

Here is a suggestion for your CSS styling:

*{
    margin:0;
    padding:0;
}
html, body {
    -moz-box-sizing:border-box;
    -webkit-box-sizing:border-box;
    box-sizing:border-box;
    height: 100%;
    background-color: red;
    padding-top:5px;
}    
.container {
    height: 100%;
    background-color: blue;
    *zoom: 1; /* this line makes IE understand the container height */
}

To start off, reset all margins and paddings on elements.
Setting box-sizing:border-box; ensures element size remains consistent regardless of added padding.

If preferred, you can utilize an absolutely positioned div for the red bar as well.

For HTML:

<div class="red-bar"></div>
<div class="content"></div>

CSS:

.red-bar{ position:absolute; width:100%; height:5px; top:0; background:red; }
.content{ height:100%; background:blue; }

Answer №2

Instead of using margin-top, an alternative solution is to utilize padding-top

Answer №3

To prevent your margin from pushing your div upward and increasing the total height, a CSS2 trick is to wrap your container div in another div and float it either left or right. Floated elements typically do not push their parent element. Here's an example of how you can achieve this:

The markup:

<div class="wrap">
 <div class="container">
  &nbsp;
 </div>
</div>
<div class="clear"></div>

And the style:

html, body {
  height: 100%;
  background-color: red;
  padding-left: 0px;
  padding-right: 0px;
  margin: 0;
}    
.container {
  height: 50%;
  background-color: blue;
  margin-top: 5px;
  *zoom: 1;
}
.wrap {
  height: auto;
  float: left;
  width: 100%;
}
.clear {
  clear: both;
}

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