body {
  font-family: Arial, sans-serif;
  background: #f0f0f0;
  margin: 0;
  color: black;
}

h1, h2, h3 {
  color: blue;
  background-image: none;
}

p {
  color: black;
}

header {
  background: #003366;
  padding: 10px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-frame {
  border-radius: 50%;
  padding: 5px;
  background: linear-gradient(to right, red, orange, yellow, green, blue, indigo, violet);
}

.logo {
  font-size: 1.5em;
  font-weight: bold;
  color: greenyellow;
  background-color: #003366;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: none;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
}

nav li {
  margin: 0 10px;
}

nav a {
  text-decoration: none;
  color: red;
}

main {
  padding: 20px;
  text-align: center;
}

.background-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.5;
}

.profile-picture {
  border-radius: 50%;
  width: 200px;
  height: 200px;
  object-fit: contain;
}