html, body {
  height: 100%;
  width: 99%;
}

body{
  background: #171717;
  color: #c5c6c7;
  font: Roboto;
}
h1{background-color: #262626;
   line-height: 70%;
  text-indent: 1em;
   font-size: 3em;
   border-radius: 25px;
}

nav{font-weight: bold;
    background-color: #262626;
   line-height: 200%;
  text-indent: 1em;
  font-size: 1.8em;
    border-radius: 10px;
}
nav a{text-decoration: none;
      color: #c5c6c7;
}
Purchase{
  color: white;
  background: #10c45b;
  font-weight: bold;
  font-size: 3em;
  border-radius: 25px;
  background-size: 10%;
}
a{
      color: white;
      text-decoration: none;
}
p {font-size: .90em;
  text-indent: 3em;
}
ul {font-weight: bold;
}
footer{
  font-size: .75em;
       font-style: italic;
}

.form-control{
  width: 31em;
}

@media only screen and (max-width: 768px) {
  header {height: 50%;
  display: inline;}
  h1 {font-size: 2em}
  nav a {font-size: 60%;
    padding: 0;
    margin: 0;
    text-align: center;
  text-indent: 0;}
  img {width: auto;
  height: 100px}
  nav {width: auto;
  padding: 0;
  margin: 0;
  text-align: center;
text-indent: 0;}
}