style.css

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  height: 95vh;
  width: 95vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-image: url(img/forresttrees.png);
  background-size: cover;
  color: rgb(255, 255, 255);
  background-color: black;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 8%;
  margin-bottom: 0;
}

#cobra {
  width: 15%;
}

#main {
  display: flex;
  justify-content: center;
  align-items:center;
  flex-direction: row;
  margin-bottom: 5%;
  margin-left: 28%
}

#instructions{
  display: flex;
  justify-content: left;
  align-items:center;
  flex-direction: row;
  margin-left: 5%;
  
 
}

#snake{
  display: flex;
  justify-content: left;
  align-items:center;
  flex-direction: row;
  
}
#arrows {
  width: 40%;
  padding: 10px;
  
}

h2 {
  font-size: 20px;
  padding: 10px;
}


@media screen and (max-width:700px){ /*Condição para que sejam aplicadas as próximas linhas. Caso contrário, volta para as configurações padrão.*/
  
  
  #main{
      margin-bottom: 20%;
      margin-left:39%     
  }
  
}

@media screen and (min-width: 1000px){
  
  header{
      width: 50%;
  }
}