body {
  font-family: 'Segoe UI', 'Hiragino Sans', 'Meiryo', sans-serif;
  margin: 0;
  padding: 0;
  background: #f7f7fa;
  color: #222;
}
header, footer {
  background: #4a90e2;
  color: #fff;
  padding: 1em;
  text-align: center;
}
nav a {
  color: #fff;
  margin: 0 1em;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  text-decoration: underline;
}
main {
  max-width: 700px;
  margin: 2em auto;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  padding: 2em;
}
.cta {
  display: inline-block;
  background: #e94e77;
  color: #fff;
  padding: 0.7em 2em;
  border-radius: 4px;
  text-decoration: none;
  font-size: 1.2em;
  margin-top: 1em;
}
.cta:hover {
  background: #d13b5b;
}
form label {
  display: block;
  margin-top: 1em;
}
form input, form textarea {
  width: 100%;
  padding: 0.5em;
  margin-top: 0.3em;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}
form button {
  margin-top: 1em;
  background: #4a90e2;
  color: #fff;
  border: none;
  padding: 0.7em 2em;
  border-radius: 4px;
  font-size: 1em;
  cursor: pointer;
}
form button:hover {
  background: #357ab8;
}
@media (max-width: 600px) {
  main {
    padding: 1em;
  }
  nav a {
    margin: 0 0.5em;
  }
}