.fixed-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  margin: auto;
  z-index: 1000;
  overflow: hidden;
}

.logo {
  text-decoration: none;
  color: #fff;
  font-size: 24px;
  display: inline-block;
  margin-left: 16px;
}
@media (max-width: 768px) {
  .fixed-header {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media screen and (max-width: 420px) {
  .logo {
    margin-left: 16px;
  }
}
@media screen and (max-width: 336px) {
  .logo {
    margin-left: 8px;
  }
}