style.css

body {
  background-image: url("plane.png");
  background-repeat: no-repeat;
  background-color: #474747;
  background-attachment: fixed;
  background-position: center;
}

.row {
    display: inline-block;
    float:left;
}

.left {
  width: 27.7%;
  padding-left: 20%;
}

.right {
  width: 27.7%;
  padding-right: 20%
}

button {
  background: blue;
}

.seat:active,
.seat:hover {
  /*background-color: #9c74db;*/
  color: white;
}

.seat:visited {
  background-color: red;
}

.seat {
  width: 65px;
  height: 65px;
	background-color:#44c767;
	-moz-border-radius:1px;
	-webkit-border-radius:1px;
	border-radius:8px;
	border:1px solid #18ab29;
	display:inline-block;
	cursor:pointer;
	color:#ffffff;
	font-family:Verdana;
	font-size:30px;
	padding:2px 1px;
	text-decoration:none;
	text-shadow:1px 1px 4px #2f6627;
}
.seat:hover {
	background-color:#5cbf2a;
}
.seat:active {
	position:relative;
	top:1px;
}