How to make a DIV not wrap?

I need to create a container DIV style that contains multiple other DIV's. It is asked that these DIV's wouldn't wrap if the browser window is resized to be narrow.

I tried to make it work like below.

<style>
   .container
   {
      min-width: 3000px;
      overflow: hidden;
   }
   .slide
   {
      float: left;
   }
</style>
<div class="container">
   <div class="slide">something</div>
   <div class="slide">something</div>
   <div class="slide">something</div>
   <div class="slide">something</div>
</div>

This works in most cases. However, in some special cases, the rendering is incorrect. I found the container DIV change to 3000px width in RTL of IE7; and it turns to be messy.

Is there any other way to make a container DIV not to wrap?

Try using white-space: nowrap; in the container style (instead of overflow: hidden;)

If I don't want to define a minimal width because I don't know the amount of elements the only thing that worked to me was:

display: inline-block;
white-space: nowrap;

But only in Chrome and Safari :/

The following worked for me without floating (I modified your example a little for visual effect):

.container
{
    white-space: nowrap; /*Prevents Wrapping*/
    
    width: 300px;
    height: 120px;
    overflow-x: scroll;
    overflow-y: hidden;
}
.slide
{
    display: inline-block; /*Display inline and maintain block characteristics.*/
    vertical-align: top; /*Makes sure all the divs are correctly aligned.*/
    white-space: normal; /*Prevents child elements from inheriting nowrap.*/
    
    width: 100px;
    height: 100px;
    background-color: red;
    margin: 5px;
}

<div class="container">
   <div class="slide">something something something</div>
   <div class="slide">something something something</div>
   <div class="slide">something something something</div>
   <div class="slide">something something something</div>
</div>

The divs may be separated by spaces. If you don't want this, use margin-right: -4px; instead of margin: 5px; for .slide (it's ugly but it's a tricky problem to deal with).