body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f9;
  color: #333;
}

header, footer {
  background-color: #192733;
  color: #fff;
  padding: 10px 0;
  text-align: center;
}


.hero {
  background-color: #2bf5ff;
  color: #192733;
  padding: 50px 0;
  text-align: center;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero .container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero h1 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2em;
}

.symptoms-list-section {
  padding: 20px 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.symptoms-list {
  list-style-type: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.symptoms-list li {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.symptoms-list li:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  background-color: #192733;
}

.symptoms-list a {
  display: block;
  color: #192733;
  text-decoration: none;
  padding: 20px;
  text-align: center;
  font-size: 1.2em;
  font-weight: bold;
  border-radius: 10px;
  transition: background-color 0.3s, color 0.3s;
}

.symptoms-list li:hover a {
  color: #2bf5ff;
  background-color: #192733;
}