style.css

/* General styles for the debugger, and the index component */

html,
body {
  font: 14px/1.21 'Helvetica Neue', arial, sans-serif;
  font-weight: 400;
  /* For mobile phones to be able to scroll the view into place */
  min-height: 600px;
}

h1 {
  text-align: center;
  font-weight: bold !important;
}

p {
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

button {
  margin-left: 5px;
  margin-right: 5px;
}

input[type='checkbox'] {
  margin-left: 5px;
}

.hide {
  display: none;
}

.notification {
  width: 50vw;
  max-width: 400px;
  color: #fafafa;
  background-color: rgba(0, 0, 0, 0.65) !important;
  position: fixed !important;
  bottom: 10px;
  right: 20px;
  text-overflow: wrap !important;
  z-index: 100000;
}

.wasmboy {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.wasmboy__title {
  margin-top: 10px;
  margin-bottom: 10px;
  font-size: 1rem;
}

.wasmboy__canvas-container {
  text-align: center;
}

.wasmboy__canvas-container__canvas {
  border: 1px solid black;

  /* Width and height are 160x144 pixel aspect ratio in vw */
  width: 50vw;
  height: 45vw;
  min-width: 160px;
  min-height: 144px;
  max-width: 640px;
  max-height: 576px;
}

/* https://atomiks.github.io/30-seconds-of-css/ */
@keyframes donut-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
.donut {
  display: inline-block;
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-left-color: #7983ff;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  animation: donut-spin 1.2s linear infinite;
}

/* animate.css https://github.com/daneden/animate.css/blob/master/animate.css */
.animated {
  -webkit-animation-duration: 0.5s;
  animation-duration: 0.5s;
  -webkit-animation-fill-mode: both;
  animation-fill-mode: both;
}

@-webkit-keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.fadeIn {
  -webkit-animation-name: fadeIn;
  animation-name: fadeIn;
}