.btn {
    font-weight: bold;
  	padding-top : 10px;
  	padding-bottom : 10px;
    border-radius: 3px;
    cursor: pointer; 
    box-shadow: 0 8px 16px 0 grey;
    text-decoration: none;;
}

.selected {
      background-color:#72e33e;
  }

.unselected {
  background-color:#e6e6e6;
}

body{
    background-color: black;
}  

#score{
    color:white;
    font-size: 24px;
}
#smiley{
    color:white;
    font-size: 24px;
    margin-bottom: 10px;
    margin-top: 10px;
}