body {
  background: #f5f5f7;
  font-family: 'Google Sans', Roboto, Arial, sans-serif;
  color: #202124;
}
header, .footer {
  background: #fff;
}
.card {
  border-radius: 10px;
}
.nav-link.active, .nav-link:focus {
  color: #4285F4 !important;
  font-weight: bold;
}
.sidebar {
  min-height: 100vh;
}
@media (max-width: 767px) {
  .sidebar {
    display: none;
  }
  .container, .card, main {
    padding: 0 !important;
  }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.boton-parpadea {
  animation: blink 1s step-start 0s infinite;
}