body {
min-height: 800px;
  display: block;
  position: relative;
}

body::after {
  content: "";
  background: url(/css/fish.jpg);
  opacity: 0.5;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  position: absolute;
  z-index: -1;   
}

table {

border-collapse: collapse;

border-spacing: 0;

}

td, th {

padding: 5px;

border-bottom: 1px solid #aaa;

}

label {

display: block;

margin: 5px 0;

}

h1 {text-align: center;
font-size:70px;}
h2{text-align: center;}