CSS Bubble Animation - Lena Design

Demo:

*to see the animation on the website click here.

To learn how to create the CSS Bubbles Animation follow the steps below and watch the video tutorial:

Add HTML
Add CSS
Add CSS Animation

Step1.

Add HTML

Create the container and add some bubbles and the text (optional):

<div class="container">
<div class="text">BUBBLES</div>
  <div class="bubbles">
    <div class="bubble1"></div>
    <div class="bubble2"></div>
    <div class="bubble3"></div>
    <div class="bubble4"></div>
    <div class="bubble5"></div>
    <div class="bubble6"></div>
    <div class="bubble7"></div>
    <div class="bubble8"></div>
    <div class="bubble9"></div>
    <div class="bubble10"></div>
  </div>
</div>

Step2.

Add CSS

Set the colour and the position of the background and elements and import the font (source: https://fonts.google.com/):

@import url('https://fonts.googleapis.com/css2?family=Luckiest+Guy&display=swap');

body {
  background-color: #00b4d8; 
  overflow: hidden;
  height: 100vh; 
}
.container {
  position: relative;
  top:0;  
}
.bubbles {
  position: fixed;
  opacity:0.9;
}

Style the text (optional):

.text {
  position: relative;
  font-family: 'Luckiest Guy', cursive;
  font-weight: 900;
  font-size:80px;
  -webkit-text-stroke: 2px rgba(255,255,255,0.6);
	-webkit-text-fill-color: transparent;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  text-align: center;
  text-shadow: 2px 2px rgba(255,255,255,0.1);
}

Style the bubbles:

.bubble1 {
  position: absolute; 
  width: 100px;
  height: 100px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  animation: up 12s linear infinite;
  top:600px;
  left:1000px;
  
}

.bubble1:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.4);
  border-radius:50%;
  width:25px;
  height:50px;
  left:15px;
  top:12px;
  transform: rotate(25deg);
  filter: blur(8px);
}

.bubble2 {
  position: absolute; 
  width: 50px;
  height: 50px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  left:800px;
  top: 700px;
  animation: up 16s linear infinite;
}

.bubble2:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.6);
  border-radius:50%;
  width:12.5px;
  height:25px;
  left:15px;
  top:7px;
  transform: rotate(25deg);
  filter: blur(8px);
}

.bubble3 {
  position: absolute; 
  width: 80px;
  height: 80px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  left:1200px;
  top:800px;
  animation: up 5s linear infinite;
}

.bubble3:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.4);
  border-radius:50%;
  width:20px;
  height:40px;
  left:15px;
  top:10px;
  transform: rotate(25deg);
  filter: blur(7px);
}

.bubble4 {
  position: absolute; 
  width: 30px;
  height: 30px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -5px -5px 8px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  animation: up 7s linear infinite;
  left:800px;
  top: 700px;
}

.bubble4:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.8);
  border-radius:50%;
  width:10px;
  height:8px;
  left:7px;
  top:5px;
  transform: rotate(25deg);
  filter: blur(5px);
}

.bubble5 {
  position: absolute; 
  width: 90px;
  height: 90px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  left:350px;
  top:700px;
  animation: up 13s linear infinite;
}

.bubble5:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.4);
  border-radius:50%;
  width:22px;
  height:48px;
  left:15px;
  top:12px;
  transform: rotate(25deg);
  filter: blur(7px);
}
.bubble6 {
  position: absolute; 
  width: 70px;
  height: 70px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  left:750px;
  top:700px;
  animation: up 15s linear infinite;
}

.bubble6:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.4);
  border-radius:50%;
  width:22px;
  height:48px;
  left:15px;
  top:12px;
  transform: rotate(25deg);
  filter: blur(7px);
}

.bubble7 {
  position: absolute; 
  width: 50px;
  height: 50px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  left:600px;
  top: 700px;
  animation: up 10s linear infinite;
}

.bubble7:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.6);
  border-radius:50%;
  width:12.5px;
  height:25px;
  left:15px;
  top:7px;
  transform: rotate(25deg);
  filter: blur(8px);
}

.bubble8 {
  position: absolute; 
  width: 80px;
  height: 80px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  left:-100px;
  top:800px;
  animation: up 8s linear infinite;
}

.bubble8:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.4);
  border-radius:50%;
  width:20px;
  height:40px;
  left:15px;
  top:10px;
  transform: rotate(25deg);
  filter: blur(7px);
}

.bubble9 {
  position: absolute; 
  width: 30px;
  height: 30px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -5px -5px 8px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  animation: up 17s linear infinite;
  left:600px;
  top: 700px;
}

.bubble9:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.8);
  border-radius:50%;
  width:10px;
  height:8px;
  left:7px;
  top:5px;
  transform: rotate(25deg);
  filter: blur(5px);
}

.bubble10 {
  position: absolute; 
  width: 90px;
  height: 90px;
  background-color: rgba(255,255,255,0.2);
  border-radius: 50%;
  box-shadow:  inset -7px -7px 15px rgba(255, 255, 255, 0.3), 5px 5px 3px rgba(0,0,0,0.07);
  overflow:hidden;
  left:950px;
  top:700px;
  animation: up 3s linear infinite;
}

.bubble10:after {
  content:"";
  position: absolute;
  background-color: rgba(255,255,255,0.4);
  border-radius:50%;
  width:22px;
  height:48px;
  left:15px;
  top:12px;
  transform: rotate(25deg);
  filter: blur(7px);
}

Step3.

Add CSS Animation

@keyframes up {
  100% { transform: translateY(-1000px);} 
}

Watch also the video tutorial:

Enjoy coding!

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