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; } code { font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace; } .backdrop { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; z-index: -10; background: rgba(0, 0, 0, 0.75); } .modal { position: fixed; top: 30vh; left: 10%; width: 80%; z-index: 10000000; overflow: hidden; }