styles.css

canvas {
  width: 100%;
  height: 100%;
  background: #edd3a2;
  background-size: cover;
  transition: all ease 1s;
}

body, html {
  margin: 0;
  overflow: hidden;
  height: 100%;
  margin: 0;
  font-family: 'Creepster', cursive;
}

.header {
  width: 100%;

}
.score {
  position: absolute;
  right: 2%;
  top: 0;
  font-size: 3.0em;
}

.score p {
  margin: 0;
  text-align: center;
}

#gas-tanks {
  margin: 0;
  font-size: .5em;
  padding: 0 4px;
  list-style: none;
}
#gas-tanks li {
  display: inline;
}
#game-over {
  display: none;
  font-size: 10.0em;
transition: all 3s ease-in-out;
  color: #e21414;
  position: absolute;
  top: 30%;
  left: 30%;
}
#game-over p {
  text-align: center;
  font-size: 20px;
}

a {
  text-decoration: none;
}

footer {
  font-family: 'Exo', sans-serif;
  position:absolute;
   bottom:0;
   color:#ff0000;
   background-color: #7a1b1b;

   text-align: center;
   color:#ddd;
   width: 100%
}

footer h4 {
    display: inline;
    color: white;
    padding: 2px 4px;
}

footer a {
  color: cornflowerblue;
}