.container,
 .about-card-container,
 .your-account-card-container,
 .card-container,
 .relax-card-container,
 .health-card-container,
 .fitness-card-container,
 .sign-in-card-container,
 .sign-up-card-container,
 .welcome-back-card-container,
 .thank-you-card-container {
     animation: transitionIn 3s;
 }

 @keyframes transitionIn {
     from {
         opacity: 0;
     }

     to {
         opacity: 1;
     }
 }