body.error404 #mainContent {
  display: flex;
  justify-content: space-between;
  padding: 100px 47px;
  max-width: 1600px;
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 800px) {
  body.error404 #mainContent {
    display: grid;
    grid-gap: 40px;
    justify-content: center;
    padding-top: 50px;
  }
}
body.error404 #mainContent > div {
  flex: 0 0 385px;
  margin-right: 80px;
}
@media (max-width: 800px) {
  body.error404 #mainContent > div {
    margin-right: 0;
    max-width: 380px;
    order: 2;
  }
}
@media (max-width: 800px) {
  body.error404 #mainContent picture {
    max-width: 380px;
    order: 1;
    margin: 0 auto;
  }
}
body.error404 #mainContent p {
  font-weight: 400;
  color: #000;
  font-size: 18px;
  margin: 40px 0;
}