* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Open Sans", sans-serif;
  background-color: #c0e6ff;
  line-height: 1.6;
  color: #222;
}

nav {
  background-color: #1ba3f1;
  padding: 0 20px;
}

nav ul {
  list-style: none;
  display: flex;
  align-items: center;
}

nav li {
  position: relative;
}

nav a {
  display: block;
  color: #fff;
  text-decoration: none;
  padding: 15px 20px;
  transition: background 0.3s ease;
}

nav a:hover {
  background-color: #1485c8;
  border-radius: 5px;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border-radius: 5px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  display: none;
  min-width: 220px;
  z-index: 1000;
}

.dropdown-menu a {
  padding: 12px 15px;
  color: #1ba3f1;
  font-weight: 500;
}

.dropdown-menu a:hover {
  background: #f1f9ff;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.content {
  padding: 20px;
  background: rgba(27, 163, 241, 0.1);
  margin: 20px auto;
  border-radius: 10px;
  max-width: 1000px;
}

footer {
  background: #1884ff;
  color: #fff;
  text-align: center;
  padding: 10px;
  position: fixed;
  bottom: 0;
  width: 100%;
  font-size: 14px;
}