#plan{
  width:750px;
}


.row{
  margin-bottom: 10px; 
}
#F{
  border-top: 1px solid #CCC;
  margin-top: 45px; 
  padding-top: 10px; 
}



.row .seat:nth-child(1)  { transform: translateY(35px); }
.row .seat:nth-child(2)  { transform: translateY(30px); }
.row .seat:nth-child(3)  { transform: translateY(25px); }
.row .seat:nth-child(4)  { transform: translateY(20px); }
.row .seat:nth-child(5)  { transform: translateY(15px); }
.row .seat:nth-child(6)  { transform: translateY(10px); }
.row .seat:nth-child(7)  { transform: translateY(5px); }

.row .seat:nth-last-child(7) { transform: translateY(5px); }
.row .seat:nth-last-child(6) { transform: translateY(10px); }
.row .seat:nth-last-child(5) { transform: translateY(15px); }
.row .seat:nth-last-child(4) { transform: translateY(20px); }
.row .seat:nth-last-child(3) { transform: translateY(25px); }
.row .seat:nth-last-child(2) { transform: translateY(30px); }
.row .seat:nth-last-child(1) { transform: translateY(35px); }