#main_Wrapper {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "page-title" "page-text";
}

#main_Heading {
  grid-area: page-title;
  grid-column: 1 / 3;
}

/*
#main_Col-L {
    grid-area: col-l;
    grid-column: 1 / 2;
    padding: 0 1em 1em;
}
*/
#page_Text {
  grid-area: page-text;
  grid-column: 1 / 3;
  padding-top: 1em;
  column-count: 2;
}

@media screen and (min-width: 768px) and (max-width: 1023px) {
  #main_Text {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas: "col-r";
    padding: 1em;
  }
  #main_Col-L {
    display: none;
  }
  #main_Col-R {
    grid-column: 1 / 2;
    grid-area: col-r;
  }
}

@media screen and (max-width: 767px) {
  #main_Text {
    grid-template-columns: 20% auto;
    grid-column-gap: 0;
    grid-template-areas: "col-l" "col-r";
    padding: 0;
  }
  #main_Col-L {
    grid-column: 1 / 2;
  }
  #main_Col-R {
    grid-column: 2 / 3;
  }
}