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

.header-container {
  display: flex;
  align-items: center;
  padding: 20px;
  background-color: #333;
  color: #fff;
}

.header-container img {
  margin-right: 10px;
}

nav ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: space-between;
  background-color: #333;
  color: #fff;
  padding: 10px;
}

nav li {
  margin-right: 10px;
}

nav li a {
  text-decoration: none;
  color: #fff;
  padding: 5px 10px;
}

nav li a:hover {
  background-color: #666;
  border-radius: 5px;
}

main {
  padding: 30px;
}

html, body {
  background-image: url("t0189bbfff0a3848a63.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-color: rgba(0, 0, 0, 0.90);
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}


footer {
  background-color: #333;
  color: #fff;
  padding: 20px;
  text-align: center;
}