7+ CSS Close Button Examples

This post contains a total of 7+ Hand-Picked CSS Close Button Examples with Source Code. All the Close Buttons are made using CSS.

You can use the source code of these examples for educational purpose with credits to the original owner.

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1. By Marius Nicula

Made by Marius Nicula. A simple but interactive close button. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title></title>
 
<style>
div a {
  width: 100px;
  height: 100px;
  position: absolute;
  right: 50%;
  top: 50%;
  margin-top: -50px;
  margin-right: -50px;
  background-color: #ffffff;
  border-radius: 50px;
  opacity: 1;
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  -webkit-box-shadow: 0px 0px 30px 0px rgba(247, 149, 29, 0.5);
  -moz-box-shadow: 0px 0px 30px 0px rgba(247, 149, 29, 0.5);
  box-shadow: 0px 0px 30px 0px rgba(247, 149, 29, 0.5);
}
div a > span {
  background-color: #f5a700;
  display: block;
  height: 12px;
  border-radius: 6px;
  position: relative;
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  position: absolute;
  top: 50%;
  margin-top: -6px;
  left: 18px;
  width: 64px;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: space-between;
  justify-content: space-between;
  -moz-justify-content: space-between;
  -ms-justify-content: space-between;
}
div a > span span {
  display: block;
  background-color: #ed7f00;
  width: 12px;
  height: 12px;
  border-radius: 6px;
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  position: absolute;
  left: 0;
  top: 0;
}
div a > span.left {
  transform: rotate(45deg);
  transform-origin: center;
}
div a > span.left .circle-left {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 0;
}
div a > span.left .circle-right {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 52px;
}
div a > span.right {
  transform: rotate(-45deg);
  transform-origin: center;
}
div a > span.right .circle-left {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 0;
}
div a > span.right .circle-right {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 52px;
}
div a:hover > span {
  background-color: #2faee0;
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
}
div a:hover > span span {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  background-color: #008ac9;
}
div a:hover > span.left .circle-left {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 52px;
}
div a:hover > span.left .circle-right {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 0;
}
div a:hover > span.right .circle-left {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 52px;
}
div a:hover > span.right .circle-right {
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
  margin-left: 0;
}
</style>
</head>
<body>
  <div>
  <a href="#">
    <span class="left">
      <span class="circle-left"></span>
      <span class="circle-right"></span>
    </span>
    <span class="right">
      <span class="circle-left"></span>
      <span class="circle-right"></span>
    </span>
  </a>
</div>
</body>
</html>

2. By Rรฉmi Lacorne

Made by Rรฉmi Lacorne. Simple CSS Close button with animation. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title>n</title> 
<style>
body, html {
  min-height: 100%;
  min-width: 100%;
  height: 100%;
  width: 100%;
  padding: 0;
  margin: 0;
  background-color: DarkSeaGreen;
}

.container {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 100px 0 0 0;
}

.circle {
  width: 50px;
  height: 50px;
  background-color: floralwhite;
  border-radius: 25px;
  margin: auto;
  box-shadow: 1px 1px 1px #565656;
  position: relative;
  transition: all 0.2s;
}
.circle:hover {
  background-color: #6fa96f;
  cursor: pointer;
}
.circle:hover > .one {
  height: 45px;
  top: 3px;
  transition: all 0.5s;
  background-color: floralwhite;
}
.circle:hover > .two {
  height: 45px;
  top: 3px;
  transition: all 0.5s;
  background-color: floralwhite;
}

.line {
  height: 20px;
  width: 3px;
  border-radius: 2px;
  background-color: #568f56;
  position: absolute;
  transition: all 0.5s;
}

.one {
  top: 15px;
  left: 23px;
  transform: rotate(45deg);
}

.two {
  top: 15px;
  left: 23px;
  transform: rotate(-45deg);
}
</style>
</head>
<body>
  <div class="container">
  
  <div class="circle">
  <div class="line one"></div>
  <div class="line two"></div>
  </div>
    
</div>
</body>
</html>

3. By Marvin van Kalsbeek

Made by Marvin van Kalsbeek. Simple pure css close button. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title></title>

<style>
.close-button {
  height: 50px;
  width: 50px;
  position: relative;
  box-sizing: border-box;
  line-height: 50px;
  display: inline-block;
}
.close-button:before,
.close-button:after {
  transform: rotate(-45deg);
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -5px;
  margin-left: -25px;
  display: block;
  height: 10px;
  width: 50px;
  background-color: #fff;
  transition: all 0.2s ease-out;
}
.close-button:after {
  transform: rotate(45deg);
}
.close-button:hover:before,
.close-button:hover:after {
  transform: rotate(0deg);
}
body {
  color: #fff;
  font-family: arial, sans-sarif;
  background-color: #333;
  text-align: center;
}
</style>
</head>
<body>
  <h2>My close button</h2>
<a href="#" class="close-button"></a>
</body>
</html>

4. By Zach Wolf

Made by Zach Wolf. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title></title>
<style>
body {
  background: #666;
  margin: 0;
  padding: 0;
}

.centererer {
  position: absolute;
  height: 26px;
  width: 26px;
  top: 50%;
  margin-top: -20px;
  left: 50%;
  margin-left: -20px;
}

.close {
  background: url('data:image/svg+xml;base64,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'), url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PHJhZGlhbEdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgY3g9IjUwJSIgY3k9IjUwJSIgcj0iMTAwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iI2YyZjJmMiIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iI2NjY2NjYyIvPjwvcmFkaWFsR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(255, 255, 255, 0.5)), color-stop(100%, rgba(255, 255, 255, 0))), radial-gradient(#f2f2f2, #cccccc);
  background: -moz-linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0)), -moz-radial-gradient(#f2f2f2, #cccccc);
  background: -webkit-linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0)), -webkit-radial-gradient(#f2f2f2, #cccccc);
  background: linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0)), radial-gradient(#f2f2f2, #cccccc);
  -moz-border-radius: 50px;
  -webkit-border-radius: 50px;
  border-radius: 50px;
  -moz-box-shadow: inset 0 1px 1px rgba(191, 191, 191, 0.75), 0 2px 1px rgba(0, 0, 0, 0.25);
  -webkit-box-shadow: inset 0 1px 1px rgba(191, 191, 191, 0.75), 0 2px 1px rgba(0, 0, 0, 0.25);
  box-shadow: inset 0 1px 1px rgba(191, 191, 191, 0.75), 0 2px 1px rgba(0, 0, 0, 0.25);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
  border: 2px solid #e6e6e6;
  color: #b3b3b3;
  float: right;
  height: 23px;
  width: 23px;
  text-indent: -9999px;
  position: absolute;
  text-decoration: none;
}
.close::after {
  content: "\2716";
  text-indent: 0;
  display: block;
  position: absolute;
  top: 2px;
  right: 5px;
  font-size: 12px;
}
.close:hover {
  color: #e6e6e6;
  background: url('data:image/svg+xml;base64,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'), url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PHJhZGlhbEdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgY3g9IjUwJSIgY3k9IjUwJSIgcj0iMTAwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iI2IzYjNiMyIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iIzhjOGM4YyIvPjwvcmFkaWFsR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(255, 255, 255, 0.5)), color-stop(100%, rgba(255, 255, 255, 0))), radial-gradient(#b3b3b3, #8c8c8c);
  background: -moz-linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0)), -moz-radial-gradient(#b3b3b3, #8c8c8c);
  background: -webkit-linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0)), -webkit-radial-gradient(#b3b3b3, #8c8c8c);
  background: linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0)), radial-gradient(#b3b3b3, #8c8c8c);
  text-shadow: 0 -1px 0 rgba(153, 153, 153, 0.5);
  cursor: pointer;
}
.close:active {
  background: url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJvYmplY3RCb3VuZGluZ0JveCIgeDE9IjAuNSIgeTE9IjAuMCIgeDI9IjAuNSIgeTI9IjEuMCI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iI2ZmZmZmZiIgc3RvcC1vcGFjaXR5PSIwLjE1Ii8+PHN0b3Agb2Zmc2V0PSIxMDAlIiBzdG9wLWNvbG9yPSIjZmZmZmZmIiBzdG9wLW9wYWNpdHk9IjAuMCIvPjwvbGluZWFyR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA=='), url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PHJhZGlhbEdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgY3g9IjUwJSIgY3k9IjUwJSIgcj0iMTAwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzhjOGM4YyIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iIzgwODA4MCIvPjwvcmFkaWFsR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
  background: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(255, 255, 255, 0.15)), color-stop(100%, rgba(255, 255, 255, 0))), radial-gradient(#8c8c8c, #808080);
  background: -moz-linear-gradient(rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0)), -moz-radial-gradient(#8c8c8c, #808080);
  background: -webkit-linear-gradient(rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0)), -webkit-radial-gradient(#8c8c8c, #808080);
  background: linear-gradient(rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0)), radial-gradient(#8c8c8c, #808080);
  text-shadow: 0 -1px 0 rgba(26, 26, 26, 0.5);
  cursor: pointer;
}
</style>
</head>
<body>
  <div class="centererer">
	<button class="close">Close</button>
</div>
</body>
</html>

5. By merrybottle

Made by merrybottle. CSS Close button with cool animation. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title></title>
<style>
@import url('https://fonts.googleapis.com/css?family=Josefin+Sans&display=swap');

html, body {
  margin: 0;
  min-height: 100vh;
  padding: 0;
}

body {
  background: #8A2387;
  background: linear-gradient(to right, #F27121, #E94057, #8A2387);
  position: relative;
  text-align: center;
}

button {
  background: none;
  border: 0;
  box-sizing: border-box;
  color: transparent;
  cursor: pointer;
  font-family: 'Josefin Sans', sans-serif;
  font-size: 18px;
  left: 50%;
  letter-spacing: 1.5px;
  line-height: 90px;
  outline: none;
  overflow: hidden;
  padding: 10px 0 0;
  position: absolute;
  text-transform: uppercase;
  top: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.2s ease-in;
  width: 100px;
}

button::before,
button::after {
  background-color: white;
  content: '';
  display: block;
  height: 3px;
  left: 0;
  position: absolute;
  transform-origin: center left;
  transition: all 0.2s ease-in;
  width: 141.4214px;
  z-index: -1;
}

button::before {
  top: 0;
  transform: rotate(45deg);
}

button::after {
  bottom: 0;
  transform: rotate(-45deg);
}

button:hover {
  color: #8A2387;
}

button:hover::before,
button:hover::after {
  height: 50px;
  transform: rotate(0deg);
}
</style>
</head>
<body>
  <button>
  Close
</button>
</body>
</html>

6. By Jermbo

Made by Jermbo. Close button with rotating animation. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title></title> 
<style>
.close-button {
  width: 150px;
  height: 150px;
  box-shadow: 0px 10 10px 10px rgba(0, 0, 0, 0.25);
  border-radius: 10px;
  background: #000;
  left: 50%;
  top: 50%;
  margin-top: -75px;
  margin-left: -75px;
  position: absolute;
  display: block;
  z-index: 200;
  text-indent: -9999px;
}
.close-button:before,
.close-button:after {
  content: '';
  width: 55%;
  height: 2px;
  background: #fff;
  position: absolute;
  top: 48%;
  left: 22%;
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
  -webkit-transition: all 0.3s ease-out;
  -moz-transition: all 0.3s ease-out;
  -ms-transition: all 0.3s ease-out;
  -o-transition: all 0.3s ease-out;
  transition: all 0.3s ease-out;
}
.close-button:after {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
  -webkit-transition: all 0.3s ease-out;
  -moz-transition: all 0.3s ease-out;
  -ms-transition: all 0.3s ease-out;
  -o-transition: all 0.3s ease-out;
  transition: all 0.3s ease-out;
}
.close-button:hover:before,
.close-button:hover:after {
  -webkit-transform: rotate(180deg);
  -moz-transform: rotate(180deg);
  -ms-transform: rotate(180deg);
  -o-transform: rotate(180deg);
  transform: rotate(180deg);
}
body {
  background: #a7cfdf;
  background: -moz-linear-gradient(45deg, #a7cfdf 0%, #23538a 100%);
  background: -webkit-gradient(linear, left bottom, right top, color-stop(0%, #a7cfdf), color-stop(100%, #23538a));
  background: -webkit-linear-gradient(45deg, #a7cfdf 0%, #23538a 100%);
  background: -o-linear-gradient(45deg, #a7cfdf 0%, #23538a 100%);
  background: -ms-linear-gradient(45deg, #a7cfdf 0%, #23538a 100%);
  background: linear-gradient(45deg, #a7cfdf 0%, #23538a 100%);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#a7cfdf', endColorstr='#23538a', GradientType=1);
}
</style>
</head>
<body>
  <a class="close-button" href="/">Close</a>
</body>
</html>

7. By Maneesh

Made by Maneesh. Close button with simple close animation. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title></title>
<style>
body {
  background: #121212;
}

.wrapper {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-button {
  display: block;
  width: 40px;
  height: 40px;
  position: relative;
  overflow: hidden;
}
.close-button > div {
  position: relative;
}
.close-button-block {
  width: 40px;
  height: 20px;
  position: relative;
  overflow: hidden;
}
.close-button-block:before, .close-button-block:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: calc(55% - 4px);
  display: block;
  width: 4px;
  height: 25px;
  transform-origin: bottom center;
  background: white;
  transition: all ease-out 280ms;
}
.close-button-block:last-of-type {
  transform: rotate(180deg);
}
.close-button .in .close-button-block:before {
  transition-delay: 280ms;
  transform: translateX(20px) translateY(-20px) rotate(45deg);
}
.close-button .in .close-button-block:after {
  transition-delay: 280ms;
  transform: translateX(-22px) translateY(-22px) rotate(-45deg);
}
.close-button .out {
  position: absolute;
  top: 0;
  left: 0;
}
.close-button .out .close-button-block:before {
  transform: translateX(-5px) translateY(5px) rotate(45deg);
}
.close-button .out .close-button-block:after {
  transform: translateX(5px) translateY(5px) rotate(-45deg);
}
.close-button:hover .in .close-button-block:before {
  transform: translateX(-5px) translateY(5px) rotate(45deg);
}
.close-button:hover .in .close-button-block:after {
  transform: translateX(5px) translateY(5px) rotate(-45deg);
}
.close-button:hover .out .close-button-block:before {
  transform: translateX(-20px) translateY(20px) rotate(45deg);
}
.close-button:hover .out .close-button-block:after {
  transform: translateX(20px) translateY(20px) rotate(-45deg);
}
</style>
</head>
<body>
  <div class="wrapper">
  <a href="#" class="close-button">
    <div class="in">
      <div class="close-button-block"></div>
      <div class="close-button-block"></div>
    </div>
    <div class="out">
      <div class="close-button-block"></div>
      <div class="close-button-block"></div>
    </div>
  </a>
</div>
</body>
</html>

8. By Paraskevas Dinakis

Made by Paraskevas Dinakis. ( Source )

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title></title>
<style>
* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background: #141926;
  font-family: Helvetica, Arial, sans-serif; 
}

.outer {
  position: relative;
  margin: auto;
  width: 70px;
  margin-top: 200px;
  cursor: pointer;
}

.inner {
  width: inherit;
  text-align: center;
}

label { 
  font-size: .8em; 
  line-height: 4em;
  text-transform: uppercase;
  color: #fff;
  transition: all .3s ease-in;
  opacity: 0;
  cursor: pointer;
}

.inner:before, .inner:after {
  position: absolute;
  content: '';
  height: 1px;
  width: inherit;
  background: #FFC107;
  left: 0;
  transition: all .3s ease-in;
}

.inner:before {
  top: 50%; 
  transform: rotate(45deg);  
}

.inner:after {  
  bottom: 50%;
  transform: rotate(-45deg);  
}

.outer:hover label {
  opacity: 1;
}

.outer:hover .inner:before,
.outer:hover .inner:after {
  transform: rotate(0);
}

.outer:hover .inner:before {
  top: 0;
}

.outer:hover .inner:after {
  bottom: 0;
}
</style>
</head>
<body>
  <div class="outer">
  <div class="inner">
    <label>Back</label>
  </div>
</div>
</body>
</html>