global.css

html,
body {
  position: relative;
  width: 100%;
  height: 100%;
}

body {
  color: #333;
  margin: 0;
  padding: 8px;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

a {
  color: rgb(0, 100, 200);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:visited {
  color: rgb(0, 80, 160);
}

p {
  font-size: 1.0rem;
  line-height: 1.6em;
}

label {
  display: block;
}

input,
button,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  padding: 0.4em;
  margin: 0 0 0.5em 0;
  box-sizing: border-box;
  border: 1px solid #ccc;
  border-radius: 2px;
}

input:disabled {
  color: #ccc;
}

input[type="range"] {
  height: 0;
}

code {
  font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, monospace;
  font-style: normal;
  padding: 0.2em 0.4em;
  margin: 0;
  font-size: 85%;
  background-color: rgba(27, 31, 35, 0.05);
  border-radius: 3px;
}

.figure-number {
  font-weight: 600;
}

button {
  color: #333;
  background-color: #f4f4f4;
  outline: none;
}

button:active {
  background-color: #ddd;
}

button:focus {
  border-color: #666;
}

.article-title {
  font-size: 3em;
  margin-bottom: 0;
}

.acknowledgements p {
  font-size: 1rem;
  line-height: 1.4rem;
}

h2 {
  margin-top: 3em;
}

@font-face {
  font-family: "Material Icons";
  font-style: normal;
  font-weight: 400;
  src: url(MaterialIcons-Regular.eot); /* For IE6-8 */
  src: local("Material Icons"), local("MaterialIcons-Regular"),
    url(MaterialIcons-Regular.woff2) format("woff2"),
    url(MaterialIcons-Regular.woff) format("woff"),
    url(MaterialIcons-Regular.ttf) format("truetype");
}

.material-icons {
  font-family: "Material Icons";
  font-weight: normal;
  font-style: normal;
  font-size: 24px; /* Preferred icon size */
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;

  /* Support for all WebKit browsers. */
  -webkit-font-smoothing: antialiased;
  /* Support for Safari and Chrome. */
  text-rendering: optimizeLegibility;

  /* Support for Firefox. */
  -moz-osx-font-smoothing: grayscale;

  /* Support for IE. */
  font-feature-settings: "liga";
}
html,
body {
  position: relative;
  width: 100%;
  height: 100%;
}

body {
  color: #333;
  margin: 0;
  padding: 8px;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* The rest of your CSS goes here */

/* Add the centering rules here at the end of your CSS */

.content {
  margin: 0 auto;
  max-width: 800px; /* you can adjust this value to suit your needs */
  padding: 0 20px; /* adds some padding so content isn't touching the edges */
}


/* Add the bundle-container rules */

.bundle-container {
  margin: 0 auto;
  max-width: 800px; /* you can adjust this value to suit your needs */
}