message: fix(theme): fix article list
diff: padding-top: calc(var(--navbar-height) + 0.5rem);
  text-align: center;
  + &:first-child {
  + margin-top: calc(0rem - var(--navbar-height));
  + }
  +
  .empty {
  max-width: 560px;
  margin: 0 auto;
  