html,
body {
  margin: 0;
  position: relative;
}

body {
  font-size: 12pt;
  font-family: Helvetica, sans-serif;
  background-color: white;
}

body * {
  box-sizing: border-box;
}

h1,
h2,
h3,
h4 {
  text-transform: uppercase;
}

a {
  text-decoration: none;
  color: tomato;
}

a:hover,
a:focus {
  text-decoration: underline;
  color: tomato;
}

.txt-center {
  text-align: center;
}

section#main {
  width: 100%;
  height: auto;
  position: relative;
  margin: 40px 0;
}

section#main > .inner {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 40px;
  background-color: #f9f9f9;
  border-radius: 10px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  background-color: black;
  color: white;
  padding: 10px 15px;
  border-radius: 3px;
  transition: all 200ms ease-in-out;
}

.btn:hover,
.btn:focus {
  background-color: #333;
  color: white;
  text-decoration: none;
}

figure {
  border: white solid 10px;
  box-shadow: 0 0 15px #0000006b;
}

code {
  display: block;
  background-color: #333;
  border-radius: 3px;
  border: white dashed 2px;
  color: #ddd;
  padding: 10px;
  margin: 20px 0;
}

footer {
  width: 100%;
  background-color: black;
  padding: 20px 40px;
}

footer p {
  color: white;
  font-size: 10pt;
}

footer p span {
  color: tomato;
}