body
{
background:#add8e6;
  font-family: Helvetica, Arial;
}
.single_product
{
  background: black;
  margin-bottom: 1%;
  text-align: center;
  display: block;
  border: outset ;
  border-width: 10px;
  margin-left:20%;
  margin-right:20%;
  color: grey;
  
}

.single_product > a
{
    color: grey;
}

nav
{
text-align: center;    
}

nav >a {
    color:grey;
    font-size: 20px;
}

.button {
  background-color: blue; 
  border: none;
  color: white;
  padding: 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 12px;
}

.footer
{
    text-align: center;
    clear: both;
    margin-top: 20px;
}


h1, h2{
  text-align: center;
}


table {
    width:100%;
}