:root {
  --green: #26D367;
  --light: #fff;
  --dark: #222;
  --primary: #FF8200;
}

* { box-sizing: border-box; }

html, body { padding: 0; margin: 0; }

body {
  color: var(--dark);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

a { text-decoration: none; }

#container {
  width: 28rem;
  border: 1px solid var(--green);
  border-radius: 6px 6px 0 0;
}

header a {
  display: flex;
  justify-content: center;
  align-items: center;

  background-color: var(--green);
  color: #fff;

  border-radius: 6px 6px 0 0;
  padding: 0.5rem 0;
  margin-bottom: 1rem;
}
header h1 {
  font-size: 3rem;
  margin: 0;
  padding-left: 0.5rem;
}

h2, h3 {
  font-weight: normal;
  line-height: 2rem;
  margin: 0;
  text-align: center;
}
h2 strong {
  color: var(--green);
  font-weight: bold;
}
h3 {
  margin-top: 0.7rem;
  line-height: 1.5rem;
}

label, input, button, p, a {
  font-size: 1rem;
}

form {
  display: flex;
  padding: 0 1rem;
  margin-top: 1.7rem;
}

form p {
  font-size: 0.9rem;
}

input {
  border: 1px solid var(--green);
  border-radius: 6px;
  padding: 12px 20px;
  width: 90%;
}

button {
  background-color: var(--green);
  border: 0;
  border-radius: 6px;
  color: var(--light);
  cursor: pointer;
  font-weight: bold;
  padding: 12px 32px;
  text-transform: uppercase;
}

button:hover {
  background-color: var(--primary);
}

footer {
  background-color: var(--dark);
  margin-top: 1rem;
}

footer a {
  display: block;
  padding: 1rem;
  text-transform: uppercase;
  text-align: center;
  color: var(--light);
}
footer a:hover {
  background-color: var(--primary);
}

@media screen and (max-width: 414px) {
  h2, h3 {
    margin: auto;
    margin-bottom: 2rem;
    padding: 0 1.5rem;
    text-align: center;
  }
  h2 {
    margin-bottom: 0.5rem;
  }
}

main.about p {
  padding: 0 1rem;
}
main.about p, main.about a {
  font-size: 1.2rem;
}
main.about a {
  color: var(--primary);
  font-weight: bold;
}
main.about a:hover {
  text-decoration: underline;
}