*{margin:0;padding:0;box-sizing:border-box}body,html{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:linear-gradient(135deg,#667eea,#764ba2);color:#333}a{color:inherit;text-decoration:none}button{cursor:pointer}button,input{font-family:inherit}