JSFiddle - React, Tailwind, and code Playground

by Lucas Costa

HTML

<h1>Simples Popup/Modal </h1>

<div id="popup1" class="overlay">
	<div class="popup">
		<h2>Olá</h2>
		<a class="close" href="#popup1">&times;</a>
		<div class="content">
			Sou um popup puro css
		</div>
	</div>
</div>

CSS

body {
  background-size: cover;
  height: 100vh;
}

h1 {
  text-align: center;
  font-family: Tahoma, Arial, sans-serif;
  color: blue;
}

.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: visible;
  opacity: 1;
}

.overlay:target {
  visibility: hidden;
  opacity: 0;
}

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

.popup h2 {
  margin-top: 0;
  color: #333;
  font-family: Tahoma, Arial, sans-serif;
}
.popup .close {
  position: absolute;
  top: 20px;
  right: 30px;
  transition: all 200ms;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  color: #333;
}

.popup .close:hover {
  color: #06D85F;
}

.popup .content {
  max-height: 30%;
  overflow: auto;
}

@media screen and (max-width: 700px){
.popup{
    width: 70%;
  }
}