#app-startup, .startup-error { box-sizing: border-box; max-width: 480px; margin: 0 auto; padding: 80px 24px; color: #172d21; background: #faf8f1; font-family: sans-serif; line-height: 1.6; }
#app-startup[hidden], #app-startup button[hidden] { display: none; }
#app-startup h1, .startup-error h1 { font-size: 22px; }
#app-startup button { min-height: 44px; padding: 8px 20px; border: 0; border-radius: 6px; color: #fff; background: #1b513a; font: inherit; }