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                <section class="readable-theme">
  <div data-student-theme="chris">
    <p class="message">Chris: I've spoken at events and given workshops all over the world at conferences.</p>
  <div data-student-theme="rachel">
    <p class="message">Rachel: I prefer email over other forms of communication.</p>
  <div data-student-theme="jen">
    <p class="message">Jen: This is why I immediately set up my new team with Slack for real-time chat.</p>
  <div data-student-theme="tyler">
    <p class="message">Tyler: I miss AIM and MySpace, but this message board is okay.</p>


                .readable-theme [data-student-theme] {
  --student-background: hsl(50, 50%, 90%);
  --student-color: hsl(200, 50%, 10%);
  --student-font: Verdana, Geneva, sans-serif;

.message {
  background-color: var(--student-background, #fff);
  color: var(--student-color, #000);
  font-family: var(--student-font, "Times New Roman", serif);
  margin-bottom: 10px;
  padding: 10px;

[data-student-theme="rachel"] {
  --student-background: rgb(43, 25, 61);
  --student-color: rgb(252, 249, 249);
  --student-font: Arial, sans-serif;

[data-student-theme="jen"] {
  --student-background: #d55349;
  --student-color: #000;
  --student-font: Avenir, Helvetica, sans-serif;

[data-student-theme="tyler"] {
  --student-background: blue;
  --student-color: yellow;
  --student-font: "Comic Sans MS", "Comic Sans", cursive;