.bd-main .bd-content .bd-article-container {
  max-width: 70em;  /* default is 60em */
}
.bd-page-width {
  max-width: 88em;  /* default is 88rem */
}

/* Light mode (default) */
.bd-header-announcement {
  background-color: #DAEBF1 !important;  /* Your chosen background */
  color: #002B5C !important;            /* A strong contrasting text colour */
  border-left: 5px solid #007CBA !important; /* A refined accent colour */
}

/* Optional: Adjust for dark mode */
@media (prefers-color-scheme: dark) {
  .bd-header-announcement {
    background-color: #002B5C !important;
    color: #DAEBF1 !important;
    border-left: 5px solid #007CBA !important;
  }
}