body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f4f9;
}


html, body {
  max-width: 100%;
  overflow-x: hidden; 
}

header {
  background: #2c3e50;
  color: white;
  padding: 10px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.logo-title img {
  width: 40px;
  height: 40px;
}

h1 {
  margin: 0;
  font-size: 22px;
}

nav {
  margin-top: 10px;
}

.navbar {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap; 
  justify-content: center;
  background: #34495e;
  border-radius: 6px;
}

.navbar > li {
  position: relative;
  padding: 12px 18px;
  cursor: pointer;
  color: white;
}

.navbar > li:hover {
  background: #1abc9c;
  border-radius: 6px;
}

.navbar li ul {
  position: absolute;
  top: 45px;
  left: 0;
  background: #2c3e50;
  list-style: none;
  padding: 0;
  display: none;
  min-width: 200px;
  border-radius: 6px;
  box-shadow: 0px 3px 6px rgba(0,0,0,0.2);
}

.navbar li:hover ul {
  display: block;
}

.navbar li ul li {
  padding: 10px;
}

.navbar li ul li a {
  color: white;
  text-decoration: none;
  display: block;
}

.navbar li ul li:hover {
  background: #16a085;
  border-radius: 6px;
}

iframe {
  border: 2px solid #ddd;
  border-radius: 6px;
  margin: 20px auto;
  display: block;
  background: white;
  width: 100%;         
  box-sizing: border-box; 
}