header {
  height: 0;
}

#admin_Login {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "main-head" "main-exit";
  width: 50%;
  margin: 10em 25%;
}

#main_Form {
  width: var(--form-width);
}

#main_Head {
  grid-column: 1/2;
  grid-area: main-head;
  align-content: center;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 2rem;
}

#main_Exit {
  grid-column: 1/2;
  grid-area: main-exit;
  font-family: var(--font-family-serif);
  font-size: var(--font-size-h2);
  color: var(--accent-red);
  text-align: center;
  margin-bottom: 0.5rem;
}

@media (0 <= width <= 768px) {
  nav,
  #admin_Login {
    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;
        }
    }

    */