.banner-section {
  position: relative;
  width: 100%;
    background: url('../images/TMS.jpg') no-repeat center/cover;
    height: 450px;  

}

@media (min-width: 576px) {
  .banner-section {
    background: url('../images/TMS.jpg') no-repeat center/cover;
    height: 450px;  
  }
}

@media (min-width: 768px) {
  .banner-section {
    background: url('../images/TMS.jpg') no-repeat center/cover;
    height: 500px;  
  }
}

@media (min-width: 992px) {
  .banner-section {
    height: 650px;  /* notebooks/laptops */
  }
}

@media (min-width: 1200px) {
  .banner-section {
    background: url('../images/TMS.jpg') no-repeat center/cover;
    height: 768px;
    
  }
}

  .banner-section .overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
  }

  .banner-section .container {
    position: relative; 
  }

.contact {
    background-color: #FFFF;
    color: var(--sulista-orange);
    font-weight: 500;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    transition: background-color .2s, color .2s;
    text-decoration: none;
    margin-top: 20px;
  }

.contact:hover {
    background-color: var(--sulista-orange);
    color: var(--sulista-blue);
  }  

  @media (max-width: 768px) {
    .banner-section .display-4 { font-size: 2.5rem; }
    .banner-section .h3       { font-size: 1.5rem; }
    .banner-section .lead     { font-size: 1rem; }
    .contact                  { font-size: 0.9rem; padding: 0.4rem 0.8rem; }
  }
  
  /* Smartphones pequenos */
  @media (max-width: 576px) {
    .banner-section .display-4 { font-size: 2.5rem; }
    .banner-section .h3       { font-size: 1.25rem; }
    .banner-section .lead     { font-size: 0.875rem; }
    .contact                  { font-size: 0.85rem; padding: 0.35rem 0.7rem; }
  }