body{
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  background-color: #667;
}
#game-board{
  margin-top: 40px;
  background-color: darkgreen;
  width: 500px;
  height: 500px;
  border: 20px ridge gold;
  border-radius: 5%;
  display: grid;
  grid-template-rows: repeat(21, 1fr);
  grid-template-columns: repeat(21, 1fr);
}
#splash{
  display: block;
  position: relative;
  width: 500px;
  cursor: pointer;
}
#splash h1{
  position: absolute;
  top: 90px;
  left: 65px;
  font-family: Arial, Helvetica, sans-serif;
  font-size:40px;
  color: white;
  text-shadow: 4px 4px 4px black;
}
#splash p{
  position: absolute;
  top: 160px;
  left: 45px;
  width: 90%;
  font-size: 20px;
  text-align: justify;
  line-height: 30px;
  color: white;
}
#splash h3{
  position: absolute;
  top: 465px;
  left: 65px;
  font-family: Arial, Helvetica, sans-serif;
  font-size:30px;
  color: black;
  line-height: 70px;
  text-shadow: 4px 4px 4px gold;
}
#score{
  position: relative;
  display: none;
  height: 0;
  top: 65px;
  left: 40px;
  font-family: Arial, Helvetica, sans-serif;
  font-size:80px;
  color: rgba(255, 255, 255, 0.2);
  }
#ending{
  width: 500px;
  display: none;
  position: absolute;
  cursor: pointer;
}
#ending h2{
  position: relative;
  height: 0;
  top: 175px;
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 75px;
  font-style: italic;
  color: goldenrod; 
  font-weight: bold;
  text-shadow: 3px 3px 3px brown;
}
#ending h3{
  position: relative;
  height: 0;
  top: 400px;
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 40px;
  font-style: italic;
  color: black; 
  font-weight: bold;
  text-shadow: 3px 3px 3px goldenrod;
}
.snake{
  background: radial-gradient(green, yellow, red);
  border: .25vmin solid black;
  border-radius: 7px;
}
.snakeHead{
  background: radial-gradient(yellow,green, blue);
  border: .25vmin solid greenyellow;
  border-radius: 8px;
}
.food{
  background-color: red;
  border: .25vmin solid black;
  border-radius: 50%;
}
.poop{
  background-color: brown;
  border: .25vmin solid black;
  border-radius: 20%;
}
#buttons{
  visibility: hidden;
  width: 450px;
  height: 100px;
  margin-left:19px;
}

@media only screen and (max-width: 550px){
  body{
    width: 500px;
    height: 100vh;
  }
  #score{
    left: 60px;
  }
  #game-board{
    margin-left: 40px;
  }
  #buttons{
    visibility: visible;
    margin-left:60px;
   }
   #btn-left, #new-game, #btn-right{
    width: 100px;
    height: 300px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 25px;
    color: yellowgreen;
    background-color: saddlebrown;
    border: 3px solid gold;
    border-radius: 25%;
    margin: 15px 23px;
    outline: none;
  }
}