<p>
  Select this text to see the background color!
</p>

::-moz-selection { /* Code for Firefox */
  color: #ececec;
  background: #222831;cursive;
}

::selection {
  color: #ececec;
  background: #222831;cursive;
}

/* useless styles */
p {
  font-size: 1.5rem;
  text-align: center;
  font-family: 'Bitter', serif;
  margin: auto;
  margin-top: 40px;
  background: #7f78d2;
  border: 6px solid #efb1ff;
  box-shadow: 8px 8px 0 #ffe2ff;
  width: 400px;
  padding: 1rem;
  color: #d4f8e8;
}

html {
  background: #481380;
}