img {
  filter: grayscale(0.2);
}

#header {
  background: linear-gradient(135deg, hsl(0, 5%, 34%), hsl(0, 1%, 69%));
}

#sidenav ul li a:hover {
  background-color: hsl(0, 1%, 69%);
}

#content #titulo {
  color: hsl(0, 5%, 34%);
}

#content #characteristics > div {
  background: linear-gradient(135deg, hsl(0, 5%, 34%), hsl(0, 1%, 69%));
}

#content #characteristics > div span {
  color: hsl(0, 1%, 69%);
}

#content #italic {
  color: hsl(0, 1%, 69%);
}

#content #quote,
#content #attributes {
  background: linear-gradient(135deg, hsl(0, 5%, 34%), hsl(0, 1%, 69%));
}

#content #attributes li + li {
  border-top: 0.2rem solid hsl(0, 1%, 69%);
}

#footer {
  background: linear-gradient(135deg, hsl(0, 5%, 34%), hsl(0, 1%, 69%));
}