html, body { height: 100%; }



.overlay {
  min-height: 100%;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  padding: 2rem 0;
}

.card {
  border: 0;
  border-radius: 1rem;
  overflow: hidden;
}

.logo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.logo-wrap img {
  max-height: 80px;
  width: auto;
}

.hero-title {
  font-weight: 800;
  font-size: 2.25rem;
  line-height: 1.1;
  margin-bottom: .5rem;
}

.hero-subtitle {
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.3;
  margin-bottom: 1.75rem;
}

/* ~1.5x larger inputs/buttons */
.form-control.xl,
.btn.xl {
  font-size: 1.25rem;
  padding: 0.9rem 1rem;
  border-radius: 0.75rem;
}