#layout__body {
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 350px minmax(0, 1fr) 350px;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "left header right"
    "left content right"
    "left footer right";
  gap: 2rem;
  max-width: 1500px;
  flex: 1;
  width: 100%;
  margin: 0 auto;
}

.layout__footer {
  grid-area: footer;
  font-size: 16px;
  text-align: center;
  height: 30px;
  margin: 0;
  padding-top: 70px;
  clear: both;
  width: 100%;
}

@media (max-width: 1200px) {
  #layout__body {
    padding: 10px;
    grid-template-columns: 300px minmax(0, 1fr);
    grid-template-rows: auto 1fr auto auto;
    grid-template-areas:
      "left header"
      "left content"
      "left right"
      "left footer";
  }
}

@media (max-width: 800px) {
  #layout__body {
    padding: 10px;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto 1fr auto auto;
    grid-template-areas:
      "header"
      "left"
      "content"
      "right"
      "footer";
  }
}