body {
  margin: 0;
  background: #dcd6c8;
  font-family: Georgia, serif;
  color: #2b2a28;
}

/* banner */
.banner {
  height: 220px;
  background: url("images/banner.jpg") center/cover;
  display: flex;
  align-items: end;
}

.bannertext {
  background: rgba(0,0,0,0.45);
  color: white;
  padding: 20px 30px;
}

.banner h1 {
  margin: 0;
  letter-spacing: 4px;
  font-weight: normal;
}

/* tabs */
.tabs {
  display: flex;
  gap: 20px;
  padding: 15px 30px;
  background: #efe9dc;
  border-bottom: 1px solid #c9c1ad;
}

.tabs a {
  text-decoration: none;
  color: #3d372f;
}

/* layout */
.page {
  max-width: 1000px;
  margin: 40px auto;
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 40px;
  background: #f5f1e8;
  padding: 40px;
  box-shadow: 0 0 30px rgba(0,0,0,0.2);
}

/* main writing */
.main img {
  max-width: 100%;
  margin: 20px 0;
}

/* margin column */
.side {
  font-size: 0.9em;
  color: #6f6a5e;
  border-left: 1px dashed #c9c1ad;
  padding-left: 20px;
}