:root
{
--green: #6C737E;;
--light-green: #B2B7BF;
--lime: #89C000;
--turquoise: #00837C;
}
body
{
  background: var(--green);
}

header, main, div
{
  border:double 6px; padding:20px; margin:6px;
}

header, .subcolor, .button
{
  background:white;
  text-align:center;
}
main
{
  background: var(--light-green);
}

#green
{
  color: var(--green);
}
#greengray
{
  color: #7E8279;
}