<div>
  <div class="box">Foo</div>
  <div class="box">Bar</div>
  <div class="box">Baz</div>
</div>

<div class="lines">
  <div class="line"></div><div class="line"></div>
</div>

<div class="connect three">
</div>

<div>
  <div class="hidden box"></div>
  <div class="box">Quux</div>
</div>
body {
  font-family: Arial, sans-serif;
}

.box {
  display: inline-block;
  border: 1px solid black;
  padding: 10px 30px;
  margin: 0px 20px;
  width: 100px;
  text-align: center;
}
.box.hidden {
  visibility: hidden;
}

.lines {
  margin-left: 100px;
}

.line {
  display: inline-block;
  border: 1px solid black;
  border-top: none;
  height: 30px;
  width: 200px;
  margin-left: -1px;
  margin-right: 0;
}

.connect {
  height: 30px;
  border-right: 1px solid black;
}
.connect.three {
  width: 300px;
  margin-top: -5px;
}












// quick and dirty, just for test

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.