@charset "UTF-8";

body {
  background: url(../images/back.png) no-repeat right center/800px;
  background-color: #ffffe0;
}
.logo {
  width: 200px;
  height: auto; /* ← CSSで書けばOK */
}
header {
  margin-bottom: 70px;
}
h2 {
  font-size: 30px;
  font-weight: bold;
  font-family: 'Arial', 'Helvetica', sans-serif;
  margin-bottom: 20px;
}
h3 {
  color: #333333;
  font-size: 20px;
  font-weight: bold;
  font-family: 'Arial', 'Helvetica', sans-serif;
  margin-top: 15px;
}
div {
  border-radius: 16px;
  background-color: #ffffff;
  box-shadow: 0px 0px 8px rgba(0,0,0,0.16);
  padding: 24ps 28px;
  margin-bottom: 24px;
  width: 1000px;
  line-height: 1.5;
}
footer {
  background-color: chocolate;
  color: #ffffff;
  padding: 10px 10px 10px;
}