header {
  padding: 10px;
  min-width: 100vw;
  backdrop-filter: blur(5px);
  background-color: rgba(0,0,0,0.1);
  position: fixed;
  top: 0;
  z-index: 100;
}
.header-container {
  display: flex;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.header-container img {
  height: 60px;
  border-radius: 2rem;
}
.nav-links {
  display: flex;
  list-style: none;
  justify-content: space-evenly;
  gap: 1rem;
  font-family: 'Courier New', Courier, monospace;
}
.nav-links a {
  color: #000;
  font-weight: bolder;
  transition: border-bottom 0.25s ease;
  padding: 10px 0;
}
.nav-links a:hover, .nav-links a:active {
  border-bottom: 3px solid blue;
}
.header-container button {
  padding: 10px 15px;
  background-color: aqua;
  overflow: hidden;
  font-size: large;
}

@media (width < 480px) {
  .nav-links {
    visibility: hidden;
    width: 0;
  }
}