body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f4f7f8;
  color: #222;
}

header {
  background-color: #145c4a;
  color: #fff;
}

.banner {
  width: 100%;
  display: block;
}

.logo-title {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  gap: 10px;
}

.logo {
  width: 70px;
  height: auto;
}

h1 {
  margin: 0;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 10px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  background-color: #0f4637;
}

nav a,
nav span.current {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

nav span.current {
  text-decoration: underline;
}

main {
  padding: 20px;
  max-width: 1000px;
  margin: 0 auto;
  background-color: #ffffff;
}

section {
  margin-bottom: 25px;
}

.highlight {
  background-color: #e6f4f0;
  padding: 15px;
  border-radius: 6px;
}

.content-image {
  width: 100%;
  max-width: 600px;
  display: block;
  margin-top: 10px;
  border-radius: 4px;
}

.review {
  background-color: #fff7e0;
  padding: 15px;
  border-left: 4px solid #f4a300;
  border-radius: 4px;
}

.review blockquote {
  margin: 0 0 10px 0;
  font-style: italic;
}

.reviewer {
  margin: 0;
  font-weight: bold;
}

#back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  padding: 8px 12px;
  background-color: #145c4a;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: none;
}

footer {
  text-align: center;
  padding: 15px;
  background-color: #0f4637;
  color: #fff;
  margin-top: 20px;
}

a {
  color: #145c4a;
}

a:hover {
  text-decoration: underline;
}