body{margin:1px;padding:0}#container{display:flex}#game{border:1px solid black}#buttons{margin-left:20px;position:relative;font-size:24px}#buttons p{margin-left:20px;margin-top:5px;margin-bottom:5px}#gameover{margin:20px;position:relative;font-size:32px}#gameover button{font-size:24px}#buttons button{font-size:32px;padding:2px}#up-button{position:absolute;left:70px}#left-button{position:absolute;left:0}#right-button{position:absolute;left:120px}#down-button,#shoot-button{position:absolute;left:50px}#cancel-button{position:absolute;left:45px}.shoot{background-color:#fa9}.parent{width:640px;height:64px;display:flex}.child{width:64px;height:64px;display:flex;justify-content:center;align-items:center}