.container {
  display: grid;
  min-height: 100vh;
  gap: 10px;
  grid-template-columns: 150px 1fr;
  grid-template-rows: 1fr;
  grid-template-areas: 
    "sd-l main";
  min-height: 100vh;
}

@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    grid-template-areas: 
      "sd-l"
      "main";
  }
}

main { grid-area: main; padding: 10px; border: solid 3px; margin: 5px; }
.sidebar-l { grid-area: sd-l; display:block; padding: 10px; border: solid 3px; margin: 5px; }
.sidebar-1 > button {padding: 5px; margin: 5px;}