style.css

:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: rgb(44, 44, 44);
  background-color: #f9f9f9;
  font-size:medium;
}

body {
  padding: 2em;
  padding-bottom: 0;
  line-height: 1.6;
}

h1, h3 {
  margin-bottom: 1em;
}

h3{
  margin-top: 2em;
  text-transform: uppercase;

}

ul {
  list-style-type:circle;
  padding: 0;
}

li {
  margin-bottom: 0.5em;

}

a {
  color: #4169e1;
  text-decoration: none;
}

a:hover {
  text-decoration:underline;
}

button {
  background-color: #4169e1;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 0.75em 1em;
  cursor: pointer;
  transition-duration: 0.3s;
}

button:hover {
  background-color: #123dbd;
}

footer {
  margin-top: auto;
  text-align: center;
  padding: 1em 0;
}