:root
{
--green: #A0623F;
--light-green: #E8BB95;
--beige: #F0DECE;
}
body
{
  background: var(--green);
}

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

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

#green
{
  color: var(--green);
}
#lime
{
  color: var(--lime);
}