message: Enable MUI/Material website demo
diff: -.rqb-material.main-wrapper {
  - padding: var(--ifm-global-spacing);
  - display: flex;
  -
  - & > div {
  - display: flex;
  - width: 100%;
  - flex-direction: column;
  - align-items: center;
  - justify-content: center;
  -
  - & > div {
  - height: 50%;
  - }
  - }
  -}
  +// .rqb-material {}
  