#main_Wrapper {
  grid-template-columns: repeat(12, [col] 1fr);
  -moz-column-gap: 1rem;
       column-gap: 1rem;
  row-gap: 0;
  grid-template-areas: "main-heading" "main-form" "main-table";
}

#main_Heading {
  grid-area: main-heading;
  grid-column: col 1/span 12;
  grid-row: 1;
}

#main_Form {
  grid-area: main-form;
  grid-column: col 5/span 4;
  grid-row: 2;
  margin-bottom: 1rem;
}

#main_Table {
  grid-area: main-table;
  grid-column: col 5/span 4;
  grid-row: 3;
}

#form_Grid {
  grid-template-areas: "grid-category" "grid-catkey" "grid-number" "grid-name" "grid-caption";
}

#grid_Category {
  grid-area: grid-category;
  grid-column: col/span 4;
  grid-row: 1;
}

#grid_CatKey {
  grid-area: grid-catkey;
  grid-column: col 6/span 3;
  grid-row: 1;
}

#grid_Number {
  grid-area: grid-number;
  grid-column: col 10/span 2;
  grid-row: 1;
}

#grid_Name {
  grid-area: grid-name;
  grid-column: col/span 12;
  grid-row: 2;
}

#grid_Caption {
  grid-area: grid-caption;
  grid-column: col/span 12;
  grid-row: 3;
}

@media (992px <= width <= ) {
  #main_Form,
  #main_Table {
    grid-column: col 4/span 6;
  }
}
/*
    @if $lowerBp == 0 {
        @media screen and (max-width: calc($upperBp - 0.02px)) {
            @content;
        }
    } @else if $upperBp == '' {
        @media screen and (min-width: $lowerBp) {
            @content;
        }
    } @else {
        @media screen and (min-width: $lowerBp) and (max-width: calc($upperBp - 0.02px)) {
            @content;
        }
    }

    */
@media (768px <= width <= 992px) {
  #main_Form,
  #main_Table {
    grid-column: col 3/span 8;
  }
}
/*
    @if $lowerBp == 0 {
        @media screen and (max-width: calc($upperBp - 0.02px)) {
            @content;
        }
    } @else if $upperBp == '' {
        @media screen and (min-width: $lowerBp) {
            @content;
        }
    } @else {
        @media screen and (min-width: $lowerBp) and (max-width: calc($upperBp - 0.02px)) {
            @content;
        }
    }

    */
@media (0 <= width <= 768px) {
  nav,
  #main_Wrapper {
    display: none;
  }
  #small_Message {
    display: block;
    margin-top: 2em;
  }
}
/*
    @if $lowerBp == 0 {
        @media screen and (max-width: calc($upperBp - 0.02px)) {
            @content;
        }
    } @else if $upperBp == '' {
        @media screen and (min-width: $lowerBp) {
            @content;
        }
    } @else {
        @media screen and (min-width: $lowerBp) and (max-width: calc($upperBp - 0.02px)) {
            @content;
        }
    }

    */