:root {
  --form-width: 30%;
  --table-width: 40%;
}

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

#form_Grid {
  grid-template-areas: "grid-surname" "grid-givenname" "grid-email" "grid-hiddeninfo";
}

#grid_Surname {
  grid-area: grid-surname;
  grid-column: col/span 6;
  grid-row: 1;
}

#grid_Givenname {
  grid-area: grid-givenname;
  grid-column: col 7/span 6;
  grid-row: 1;
}

#grid_Email {
  grid-area: grid-email;
  grid-column: col/span 12;
  grid-row: 2;
}

#grid_HiddenInfo {
  grid-area: grid-hiddeninfo;
  grid-column: col/span 12;
  grid-row: 3;
}

#main_Table {
  width: var(--table-width);
}

@media screen and (min-width: 1200px) {
  #main_Form {
    width: var(--form-width);
  }
  #main_Table {
    width: var(--table-width);
  }
}
@media screen and (min-width: 992px) and (max-width: 1200px) {
  #main_Form {
    width: calc(var(--form-width) + 10%);
  }
  #main_Table {
    width: calc(var(--table-width) + 10%);
  }
}
@media screen and (min-width: 768px) and (max-width: 992px) {
  #main_Form {
    width: calc(var(--form-width) + 20%);
  }
  #main_Table {
    width: calc(var(--table-width) + 20%);
  }
}
@media screen and (min-width: 576px) and (max-width: 768px) {
  #main_Form {
    width: calc(var(--form-width) + 30%);
  }
  #main_Table {
    width: calc(var(--table-width) + 30%);
  }
}
@media screen and (max-width: 576px) {
  #main_Wrapper {
    display: none;
  }
  #small_Message {
    display: block;
    margin-top: 2em;
  }
}