body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 1s ease, transform 1s ease;
    background-color: #000;
    color: #fff;
}

body.loaded {
    opacity: 1;
    transform: translateY(0);
}

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

nav {
    background-color: #333;
    padding: 10px;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    text-align: center;
}

nav ul li {
    display: inline-block;
    margin-right: 10px;
    background-color: #333;
    color: #fff;
}

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

nav ul li a::after {
    content: "";
    display: block;
    position: absolute;
    bottom: -2px;
    right: 0;
    width: 0;
    height: 2px;
    background-color: #e7e3e3;
    transition: width 0.3s ease;
}

nav ul li a:hover::after {
    width: 100%;
    right: inherit;
    left: 0;
    transition: width 0.3s ease, left 0.3s ease;
}

section {
    margin: 20px;
    color: #fff;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 10px;
    text-align: center;
}

.btn {
    color: #f8fcfe;
    background: transparent;
    border: 2px solid #f8fcfd;
    border-radius: 5px;
    color: white;
    padding: 8px 16px;
    text-align: center;
    display: inline-block;
    font-size: 14px;
    margin: 4px 2px;
    transition-duration: 0.4s;
    cursor: pointer;
    text-decoration: none;
    text-transform: uppercase;
}

.btn1 {
    background-color: transparent;
    color: white;
    border: 2px solid #f8fcfd;
    padding: 6px 12px;
    font-size: 12px;
    transition-duration: 0.3s;
}

.btn1:hover {
    background-color: white;
    color: black;
}

.dropdown-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.dropdown {
    position: fixed;
    top: 50px; 
    right: 190px;
    background-color: white;
    color: black;
}

.dropdown-content {
    opacity: 0;
    visibility: hidden;
    position: absolute;
    z-index: 1;
    background-color: #f9f9f9;
    min-width: 130px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    padding: 12px 16px;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.dropdown-content.active {
    opacity: 1;
    visibility: visible;
}

.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown-content a:hover {
    background-color: #f1f1f1;
}

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

.dropdown:hover .dropbtn {
    background-color:white;
    color: black;
}

.card {
    margin: 20px 2;
    max-width: 400px;
    color: #fff;
    background-color: #333;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.container {
    display: grid;
    grid-gap: 20px;
    margin-left: 10px;
}
.column {
    width: 100%;
    margin-bottom: 20px;
}
@media (min-width: 600px) {
    .container {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 900px) {
    .container {
        grid-template-columns: repeat(4, 1fr);
    }
}

.tree a {
    color: #0366d6;
}

.menu li {
    margin-bottom: 10px;
  }

.menu {
  display: flex;
  justify-content: center;
  cursor: pointer;
}

.menu li {
  text-align: center;
}

.menu-icon {
  cursor: pointer;
}

@media only screen and (max-width: 768px) {
  .menu {
      display: none;
  }
}

@media only screen and (min-width: 769px) {
  .menu {
      display: block;
  }
  
  .menu-icon {
      display: none;
  }
}

.dropdown-btn1 {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
}

.btn1 {
  color: #f8fcfe;
  background: transparent;
  border: 2px solid #f8fcfd;
  border-radius: 5px;
  color: white;
  padding: 8px 16px;
  text-align: center;
  display: inline-block;
  font-size: 14px;
  margin: 4px 2px;
  transition-duration: 0.4s;
  cursor: pointer;
  text-decoration: none;
  text-transform: uppercase;
}

.btn1 {
  background-color: transparent;
  color: white;
  border: 2px solid #f8fcfd;
  padding: 6px 12px;
  font-size: 12px;
  transition-duration: 0.3s;
}

.btn1:hover {
  background-color: white;
  color: black;
}

.dropdown-btn1 {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
}

.dropdown1 {
  position: fixed;
  top: 50px; 
  right: 190px;
  background-color: white;
  color: black;
}

.dropdown-content1 {
  opacity: 0;
  visibility: hidden;
  position: absolute;
  z-index: 1;
  background-color: #f9f9f9;
  min-width: 130px;
  max-width: 200px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  padding: 12px 16px;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.dropdown-content1.active {
  opacity: 1;
  visibility: visible;
}

.dropdown-content1 a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}

.dropdown-content1 a:hover {
  background-color: #f1f1f1;
}

.dropdown1:hover .dropdown-content1 {
  display: block;
}

.dropdown1:hover .dropdown-btn1 {
  background-color:white;
  color: black;
}

.solid-line::before {
  content: "";
  display: block;
  border-bottom: 1px solid #858282;
  margin-bottom: 10px;
}