htmlcsspopupsimplemodal

Create simple CSS modal window

The goal is to create a simple and CSS-only modal window (popup), when the user clicks a link.

With no dependencies or any kind of script, and with as less code as possible.

Solution 

  • .box {
  width: 40%;
  margin: 0 auto;
  background: rgba(255,255,255,0.2);
  padding: 35px;
  border: 2px solid #fff;
  border-radius: 20px/50px;
  background-clip: padding-box;
  text-align: center;
}

.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: hidden;
  opacity: 0;
}

.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  margin: 70px auto;
  padding: 20px;
  background: #fff;
  border-radius: 5px;
  width: 30%;
  position: relative;
  transition: all 5s ease-in-out;
}

.popup .close {
  position: absolute;
  top: 20px;
  right: 30px;
  transition: all 200ms;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  color: #333;
}
    <div class="box">
    <a class="button" href="#popup1">Open</a>
</div>

<div id="popup1" class="overlay">
    <div class="popup">
        <h2>Here i am</h2>
        <a class="close" href="#">&times;</a>
    </div>
</div>