js_tetris.css

body {
  background-color: #222222;
  background: repeating-linear-gradient(45deg, #2b2b2b 0%, #2b2b2b 10%, #222222 0%, #222222 50%) 0 / 15px 15px;
  position: relative;
}
#game_screen {
    width:          434px;
    margin:         0px 0px;
    padding:        0px;
}

#game_box {
    width: 436px;
    padding: 0px 0px;
    margin: 0px 0px 0px auto;
    float: left;
}
#container {
  width: 500px;
  margin: auto;
}

/*Neon*/
p {
  text-align: center;
  font-size: 3em;
  margin: 20px 0 20px 0;
}

a {
  text-decoration: none;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  transition: all 0.5s;
}
p:nth-child(1) a {
  font-size: 1.5em;
  color: #228DFF;
  font-family: Iceland;
}

p:nth-child(1) a:hover {
  -webkit-animation: neon 1.5s ease-in-out infinite alternate;
  -moz-animation: neon 1.5s ease-in-out infinite alternate;
  animation: neon 1.5s ease-in-out infinite alternate;
}
p a:hover {
  color: #ffffff;
}
@-webkit-keyframes neon {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
  }
}


#instructions {
    font-family: "Open Sans", sans-serif;
    float: right;
    width: 350px;
    margin: 30px auto 0px 0px;
    color : #FFF;
}

#screen {
    width: 900px;
    margin: 0px auto;
}
.btn{
  position : absolute;
  top : 20px;
  right : 90px;
}
.btn a{
  padding: 30px 20px 30px 20px;
  font-family: "Open Sans" , sans-serif;
  font-size: 2em;
}