.background-image-about-problem {
  background-image: url('img/about.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  overflow: hidden;
}

.background-image-about-problem::before {
  content: '';
  position: absolute;
  inset: 0;
  backdrop-filter: blur(2px);
  background-color: rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: 1;
}

.background-image-about-problem:hover::before {
  opacity: 1;
}

.background-content-problem {
  position: relative;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.background-image-about-problem:hover .background-content-problem {
  opacity: 1;
  /* Make content visible on hover of parent */
  color: white;
}

/* Shadow only on the non-transparent pixels of the logo (text) */
.header-carousel .d-flex img[alt="ChalkoTEX Logo"],
.header-carousel .d-flex img.img-fluid {
  position: relative !important;
  z-index: 20 !important;
  /* remove box-shadow if present */
  padding-top: -3em;
  box-shadow: none !important;

  /* shadow follows shape (respects transparency) */
  filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 1)) !important;
  -webkit-filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 1)) !important;
}

/* color override */
.header-carousel p.fs-5 {
  color: #e7e7e7 !important;
}

/* CSS for partner logo section */
.partner-logo-section {
  padding: 20px;
  text-align: center;
}

.partner-logo-container {
  max-width: 1200px;
  margin: 0 auto;
}

.partner-logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  /* Distribute logos evenly */
  align-items: center;
  /* Align logos vertically in the center */
}

.partner-logo-cell {
  width: 20%;
  /* Adjust as needed for the number of logos per row */
  padding: 10px;
  box-sizing: border-box;
  /* Include padding in the width */
  display: flex;
  justify-content: center;
  /* Center logo horizontally */
  align-items: center;
  /* Center logo vertically */
}

.partner-logo-cell-inner {
  max-width: 100%;
  /* Ensure inner div doesn't exceed cell width */
  max-height: 100%;
  /* Ensure inner div doesn't exceed cell height */
  display: flex;
  justify-content: center;
  /* Center logo horizontally */
  align-items: center;
  /* Center logo vertically */
}

.partner-logo {
  max-height: 5em;
  max-width: 12em;
  /* Adjust this value to your desired height */
  object-fit: contain;
  filter: grayscale(90%);
  transition: filter 0.5s ease;
}

.partner-logo:hover {
  filter: grayscale(0%);
}


/* Responsive adjustments */
@media (max-width: 768px) {
  .partner-logo-cell {
    width: 50%;
    /* Two logos per row on smaller screens */
  }
}
@media (max-width: 1199px) {
  .partner-logo-cell {
    width: 30%;
    /* Two logos per row on smaller screens */
  }
}

@media (max-width: 480px) {
  .partner-logo-cell {
    width: 100%;
    /* One logo per row on even smaller screens */
  }
}