Answers for "can you place a border inside a border in css"

inner border css

div{
    -webkit-box-shadow:inset 0px 0px 0px 10px #f00;
    -moz-box-shadow:inset 0px 0px 0px 10px #f00;
    box-shadow:inset 0px 0px 0px 10px #f00;
}

How do you display a border like this:

A border-width:10px 5px 20px 1px B border:10px 20px 5px 1px C border:10px 1px 5px 20px D border-width:5px 20px 10px 1px