body {
  margin: 0;
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: linear-gradient(to right, #00bcd4, #2196f3);
  color: white;
}

.nav-bar {
  min-height: 50px;
  background-color: #333;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  position: relative;
}

.nav-logo {
  display: flex;
  align-items: center;
  position: absolute;
  left: 20px;
}

.nav-logo img {
  height: 40px;
  margin-right: 10px;
}

.nav-logo span {
  color: white;
  font-size: 20px;
  font-weight: bold;
}

.nav-links {
  display: flex;
  justify-content: center;
  width: 100%;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  position: relative;
  width: 120px;
  text-align: center;
}

.nav-links li:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
}

.nav-links a {
  background-color: #2196f3;
  color: white;
  padding: 10px 18px;
  text-decoration: none;
  border-radius: 5px;
  display: block;
  transition: background-color 0.3s;
}

.nav-links a:hover {
  background-color: #00bcd4;
}

.nav-dropdown {
  opacity: 0;
  visibility: hidden;
  position: absolute;
  top: 50px;
  left: 0;
    border: 5px solid #333;
  background-color: #2196f3;
  width: 160px;
  z-index: 1;
  flex-direction: column;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.nav-dropdown a {
  padding: 10px 15px;
  border-radius: 0px;
}

.nav-dropdown a:hover {
  background-color: #00bcd4;
}

.content {
  width: 1200px;
  flex: 1;
  padding: 100px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

table {
    border: 2px solid #333;
    border-collapse: collapse;
}

th, td {
    border: 1px solid #333;
    padding: 10px;
}

.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 300px;
  flex: 1;
  padding: 100px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.login input {
    margin-bottom: 10px;
    width: 200px;
    height: 40px;
    padding-left: 15px;
    padding-right: 15px;
}

.login button {
    width: 100px;
    height: 40px;
}

.login a {
  color: white;
}

footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 15px 0;
  font-size: 14px;
}