body{
  margin: 0;
  display: flex;
  justify-content: center;
  height: 100vh;
  align-items: center;
  text-align: center;
  font-family: cursive;
  background-image: url(image.gif);

}
.form{
  background-color: white;
  padding: 20px; 
  box-shadow: 0 4px 8px rgba(0,0,0, .3);
  border-radius: 10px;
  margin: 10px;
}
.input{
  display: block;
  width: 100%;
  box-sizing: border-box;
  font-size:20px;
  text-align: center;
  padding: 10px;  
  border: solid 4px green;
  color: green;
}
.input::placeholder{
  color: lightgray;
  font-family: cursive;
}
.btn{
  background-color: green;
  color:white;
  border: none;
  display: block;
  width: 100%;
  padding: 10px;
  font-size: 25px;
  font-family: cursive;
  margin: 20px 0;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0,0,0, .3);
  cursor: pointer;
}
.btn:hover{
  filter:brightness(0.9)
}
.score{
  color: green;
  text-align: right;
}