style.css

body {
  background-color: black;
  font-family: 'Press Start 2P', cursive;
  color: white;
}

.container {
  margin: 0 auto;
  position: fixed;
  left: 0;
  right: 0;
  top: 68px;
  width: 900px;
  min-width: 900px;
  height: 600px;
  border: 8px dashed white;
}

#bg-image {
  position: fixed;
  top: 76px;
  width: 900px;
  height: 600px;
  background-image: url('asteroids.jpg');
  z-index: 1;
  -webkit-filter: blur(2px);
  -moz-filter: blur(2px);
  -ms-filter: blur(2px);
  -o-filter: blur(2px);
  filter: blur(2px);
  transition: all 8s ;
  transition-timing-function: cubic-bezier(0.25, 0.1, 0.25, 1);
}

#wrapper {
  width: 900px;
  min-width: 900px;
  margin: 0 auto;
  position: fixed;
  left: 0;
  right: 0;
  top: 68px;
  z-index: 5;
  transition: all 8s ease;
}

header {
  width: 600px;
  margin: 0 auto 60px auto;
  border-bottom: 4px solid white;
}

h1 {
  font-size: 68px;
  text-align: center;
  text-shadow: 5px 5px  #AA0114;
}

.menu {
  margin: 30px auto 0 auto;
  width: 100%;
}

#main {
  display: initial;
}

#controls {
  display: none;
}

#about {
  width: 800px;
  margin: 0 auto;
  text-align: center;
  display: none;
}

#game {
  height: 100%;
  width: 100%;
}

#score {
  position: fixed;
  font-size: 32px;
  top: 68px;
  padding: 24px 0 0 20px;
}

#finalScore {
  font-size: 90px;
  padding-bottom: 150px;
}

#gameOver {
  display: none;
  background-color: transparent;
  height: 100%;
  width: 100%;
  position: absolute;
}

ul {
  list-style-type: none;
}

ul li {
  width: 100%;
  float: left;
  font-size: 32px;
  text-align: center;
  padding-bottom: 60px;
}

#description {
  font-size: 20px;
  padding-bottom: 38px;
}

footer {
  float: right;
  margin: 28px 40px 0 0;
  height: 100px;
}
footer a:hover {
  cursor: pointer;
  color: #AA0114;
}

a {
  text-decoration: none !important;
  color: white;
}

.flash {
  animation-name: flash;
	animation-duration: 1s;
	animation-timing-function: step-end;
	animation-iteration-count: infinite;
}


@keyframes flash {
  0% { background-color: white; 
       color: #AA0114;
  }
    50% { background-color: initial; 
          color: white;
  }
}

.scanlines {
  pointer-events: none;
  width: 135%;
  height: 135%;
  position: fixed;
  left: -10%;
  top: -10%;
  z-index: 7;

  background: -webkit-repeating-linear-gradient(
    top,
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.55) 0px,
    rgba(0,0,0,0.15) 4px
  );
  -webkit-background-size: 100% 4px;

  background: -moz-repeating-linear-gradient(
    top,
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.55) 0px,
    rgba(0,0,0,0.15) 4px
  );
  -moz-background-size: 100% 4px;
}