.App{text-align:center}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#000;color:#fff}button:hover{opacity:.8;transform:translateY(-1px)}button:disabled{opacity:.6;cursor:not-allowed;transform:none}input:focus{border-color:#007aff;box-shadow:0 0 0 2px #007aff33}input::placeholder{color:#8e8e93}