#background {
    opacity: .7;
}


.main-content {
  opacity: 1;
}


#pic7 {

  border-top-right-radius: 10%;
  border-bottom-left-radius: 10%;
  max-width: 0;
  float: right;
  margin-right: 100px;
  margin-top: 30px;
  margin-bottom: 30px;
}

@media (min-width:800px) {
  #pic7 {
    border: solid #ffbf00 10px;
    max-width: 35%;
  }
}