How to get a tree in HTML using pure CSS

Question

I am trying to follow this tutorial and here's my code so far.

The end of the tutorial shows that the last nodes in a branch won't have any vertical bars after it. But I couldn't get it working that way!. Any ideas if I am doing something wrong, or maybe the tutorial is missing something!

I tried even the :last-child pseudo class as shown in the tutorial, but got the same result.

Answer 1

Here's a try using only pseudo-elements and borders:

ul, li{     
    position: relative;    
}

/* chop off overflowing lines */
ul{
    overflow: hidden;
}

li::before, li::after{
    content: '';
    position: absolute;
    left: 0;
}

/* horizontal line on inner list items */
li::before{
    border-top: 1px solid #333;
    top: 10px;
    width: 10px;
    height: 0;
}

/* vertical line on list items */    
li::after{
    border-left: 1px solid #333;
    height: 100%;
    width: 0px;
    top: -10px;
}

/* lower line on list items from the first level 
   because they don't have parents */
.tree > li::after{
    top: 10px;
}

/* hide line from the last of the first level list items */
.tree > li:last-child::after{
    display:none;
}

demo (edited)