Loading Progress Bar

by suhyunified

HTML

<div class="loading-container">
  Loading
</div>

CSS

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

* {
  font-family: 'Noto Sans Mono', monospace;
  padding: 0;
  margin: 0;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.loading-container {
  position: relative;
  
  width: 200px;
  padding: 10px;
  text-align: center;

  border: 2px solid #001f10;
  border-radius: 3px;
  background-color: white;
  
  letter-spacing: 5px;
  text-transform: uppercase;
}

.loading-container::after {
  content: '';
  background-color: white;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  position: absolute;
  mix-blend-mode: difference;
  transform: scaleX(0);
  transform-origin: center left;
  animation: grow 1.5s linear infinite;
}

@keyframes grow {
  0% {
    transform: scaleX(0);
  }
  
  100% {
    transform: scaleX(1);
  }
}