CSS: Set border to half width

Question

Consider following:

...


.box{
    width:500px;
    border-bottom: 1px solid #ccc;
}

It will set the bot

Answer 1

You can Use ::after or ::before pseudo-selectors. Like:

 something here 

CSS:

div {
    width: 500px;
    height: 100px;
    position: relative;
    padding-top: 20px;
    margin-top: 50px;
}

div::before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    width: 50%;
    left: 25%;
    border-top: 1px solid red;
}

Here is the jsfiddle