body {
  background-color: #000; 
  color: whitesmoke;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

main {
 background-image: url("img/png4.png");

  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}


header,
footer {
  background-position: center;
  text-align: center;
  padding: 30px;
  margin: 30px auto;
  max-width: 1000px;
  color: #e0e0e0;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

h1, h2, h3 {
  color: #4da3ff;
 
}


nav ul {
  padding: 0;
  margin: 0;
}

nav li {
  display: inline-block;
  margin: 0 15px;
}

nav a {
  color: #a8c8ff;
  font-weight: bold;
  transition: color 0.3s, text-shadow 0.3s;
}

nav a:hover {
  color: #fff;
  text-shadow: 0 0 8px #4da3ff;
}

section {
  background-color: rgba(21, 21, 22, 0.9);
  padding: 30px;
  margin: 20px auto;
  max-width: 1000px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(77, 163, 255, 0.2);
}

article {
  margin-bottom: 20px;
}


img {
  max-width: 100%;
  height: auto;
  margin: 10px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

img:hover {
  transform: scale(1.03);
}

ul {
  padding: 0;
}

li {
  margin: 10px 0;
  font-style: oblique;
  color: #dcdcdc;
}


footer h3 {
  color: #87cefa;
  font-weight: normal;
  margin: 10px;
}


@media screen and (max-width: 600px) {
  main {
    padding: 20px;
  }

  header,
  footer {
    margin: 10px;
    padding: 20px;
  }

  nav li {
    display: block;
    margin: 10px 0;
  }

  section {
    padding: 20px;
  }


}