<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <link rel="stylesheet" href="style.css" />
    <title>Relaxer</title>
  </head>
  <body>
    <h1>Relaxer</h1>

    <div class="container" id="container">
      <div class="circle"></div>

      <p id="text"></p>

      <div class="pointer-container">
        <span class="pointer"></span>
      </div>

      <div class="gradient-circle"></div>
    </div>

    <script src="script.js"></script>
  </body>
</html>

@import url('https://fonts.googleapis.com/css?family=Montserrat&display=swap');

* {
  box-sizing: border-box;
}

body {
  background: #224941 url('https://images.unsplash.com/photo-1539401022989-05e886aec043?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1000&q=80') no-repeat center center/cover;
  color: #fff;
  font-family: 'Montserrat', sans-serif;
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: auto;
  height: 300px;
  width: 300px;
  position: relative;
  transform: scale(1);
}

.circle {
  background-color: #010f1c;
  height: 100%;
  width: 100%;
  border-radius: 50%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
}

.gradient-circle {
  background: conic-gradient(
    #55b7a4 0%,
    #4ca493 40%,
    #fff 40%,
    #fff 60%,
    #336d62 60%,
    #2a5b52 100%
  );
  height: 320px;
  width: 320px;
  z-index: -2;
  border-radius: 50%;
  position: absolute;
  top: -10px;
  left: -10px;
}

.pointer {
  background-color: #fff;
  border-radius: 50%;
  height: 20px;
  width: 20px;
  display: block;
}

.pointer-container {
  position: absolute;
  top: -40px;
  left: 140px;
  width: 20px;
  height: 190px;
  animation: rotate 7.5s linear forwards infinite;
  transform-origin: bottom center;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.container.grow {
  animation: grow 3s linear forwards;
}

@keyframes grow {
  from {
    transform: scale(1);
  }

  to {
    transform: scale(1.2);
  }
}

.container.shrink {
  animation: shrink 3s linear forwards;
}

@keyframes shrink {
  from {
    transform: scale(1.2);
  }

  to {
    transform: scale(1);
  }
}

const container = document.getElementById('container');
const text = document.getElementById('text');

const totalTime = 7500;
const breatheTime = (totalTime / 5) * 2;
const holdTime = totalTime / 5;

breathAnimation();

function breathAnimation() {
  text.innerText = 'Breathe In!';
  container.className = 'container grow';

  setTimeout(() => {
    text.innerText = 'Hold';

    setTimeout(() => {
      text.innerText = 'Breathe Out!';
      container.className = 'container shrink';
    }, holdTime);
  }, breatheTime);
}

setInterval(breathAnimation, totalTime);

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.