body {
  font-family: 'IBM Plex Sans', sans-serif;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background-color: #ffffff; /* Set header background to white */
  border-bottom: 2px solid #ddd;
}

.logo {
  max-width: 100%;
  height: auto;
}

.nav-menu {
  display: flex;
  gap: 20px;
}

.nav-menu a {
  text-decoration: none;
  color: black;
  font-weight: bold;
  text-align: center;
  padding: 10px 15px;
  transition: background 0.3s;
}

.nav-menu a:hover {
  background-color: #6eb8ff;
}

.sub-header {
  text-align: center;
  font-size: 40px;
  font-weight: bold;
  padding: 30px 0;
}

.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  padding: 20px;
}

.gallery div {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #ffffff;
  padding: 20px;
  border-radius: 8px;
  flex: 1 1 auto;
  max-width: 300px; /* Increased max width for larger logos */
}

.gallery img {
  width: 100%;
  height: auto;
  max-height: 150px; /* Ensure logos are large but maintain aspect ratio */
}

.img_reduce_2 img {
  max-width: 75%; /* Increased size */
}

.img_reduce_3 img {
  max-width: 60%; /* Increased size */
}

.img_reduce_4 img {
  max-width: 50%; /* Increased size */
}

.img_reduce_5 img {
  max-width: 40%; /* Increased size */
}

.footer {
  text-align: center;
  padding: 20px;
  background: #333;
  color: white;
}

.footer a {
  color: #6eb8ff;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

.profile-photo {
  max-width: 100%;
  width: 240px;
  height: 240px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .profile-photo {
    width: 160px;
    height: 160px;
  }
}