html css 2 column layout, both columns same height automatically?

Question

I have a two column layout set up, and I want to have both columns automatically stretch to fill parent div of the two columns, The reason being that the left column has a b

Answer 1

You can use CSS table layout (not HTML table layout, that would be poor semantics):

.container {
    display: table;
    table-layout: fixed;
    width: 944px;
    font-size: 0.75em;

}
.col {
    display: table-cell;
    vertical-align: top;
}

.container .left
{
    width: 236px;
    background-color:grey;
}
.container .right
{
    width: 708px;
    background-color:yellow;
}

    
Left
    
Right
    























Hey
      
    

Compatibility is IE8+ and fallback for IE6/7 if needed is exactly the same as for inline-block

Longer explanations in previous answers: here and there with also the good old method of faux-columns (your design must be thought with this technique in mind)