* {
  box-sizing: border-box;
}
body,
html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, sans-serif;
}

/* Header & Navigation */
.header {
  background-color: #232f3e;
  color: white;
  padding: 0 20px;
  height: 50px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  position: relative;
}

.nav-menu {
  background-color: #232f3e;
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
  height: 50px;
  align-items: center;
}

.nav-menu > li {
  position: relative;
  list-style: none;
  padding: 0 20px;
  height: 50px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.nav-menu > li > a {
  color: white;
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  user-select: none;
}

/* Submenu */
.nav-menu li ul {
  position: absolute;
  top: 50px;
  left: 0;
  background-color: #37475a;
  min-width: 200px;
  list-style: none;
  padding: 10px 0;
  margin: 0;
  display: none;
  z-index: 1000;
  border-radius: 0 0 4px 4px;
}

.nav-menu li:hover > ul {
  display: block;
}

.nav-menu li ul li {
  padding: 8px 20px;
  height: auto;
  display: block;
}

.nav-menu li ul li a {
  color: white;
  font-size: 13px;
  text-decoration: none;
  display: block;
}

.nav-menu li ul li a:hover {
  background-color: #485769;
}

/* Hamburger menu for small screens */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  margin-left: auto;
}

.hamburger div {
  width: 25px;
  height: 3px;
  background-color: white;
  margin: 4px 0;
}

/* Responsive styles */
@media (max-width: 900px) {
  .nav-menu {
    position: fixed;
    top: 50px;
    left: 0;
    right: 0;
    background-color: #232f3e;
    flex-direction: column;
    height: auto;
    display: none;
    padding-bottom: 10px;
    z-index: 10000;
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-menu > li {
    padding: 12px 20px;
    border-bottom: 1px solid #37475a;
    height: auto;
  }
  .nav-menu li ul {
    position: static;
    background-color: #37475a;
    padding-left: 20px;
    display: none;
    margin-top: 5px;
    border-radius: 0;
  }
  .nav-menu li:hover > ul {
    display: none;
  }
  .nav-menu li.active > ul {
    display: block;
  }
  .hamburger {
    display: flex;
  }
}

/* Footer */
footer {
  background-color: #232f3e;
  color: white;
  padding: 20px 40px;
  text-align: center;
  font-size: 14px;
  position: sticky;
  bottom: 0;
  width: 100%;
  box-sizing: border-box;
}

p {
  margin-bottom: 10px;
  line-height: 1.6em;
  text-align: center;
}
.style2 {
  text-align: center;
  width: 100%;
}
.style3 {
  color: blue;
  font-size: medium;
}
.style5 {
  width: 800px;
  height: 1200px;
}