message: fix: header alignment
diff: export let title: string = "";
  export let text: string = "";
  export let tight: boolean = false;
  + export let centered: boolean = true;
  export let textClassNames: string = "text-large";
  export let textAlign: "left" | "center" = "center";
  export let fullWidth: boolean = false;
  .h1 {
  @apply mb-micro md:mb-xx-small;
  }
  + .centered {
  + @apply mx-auto;
  + }
  </style>
  <header
  + class:centered
  class="relative mt-small mb-x-large md:my-x-large lg:my-xx-large lgx:px-0 {clazz}"
  class:tight
  class:text-center={textAlign === "center"}
  