* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
}

.big-img {
  width: 100%;
  display: block;
}

.small-img {
  display: none;
  width: 100%;
}

.add-relative {
  position: relative;
}

.full-img {
  width: 100%;
}

@media (max-width: 768px) {
  .small-img {
    display: block;
  }

  .big-img {
    display: none;
  }
}

.primary-heading {
  font-size: 2.4rem;
  font-weight: 600;
}

.secondary-heading {
  font-size: 1.8rem;
  font-weight: 600;
}

.tertiary-heading {
  font-size: 1.2rem;
}

.basic-text {
  font-size: 1rem;
}

.main-text {
  width: 80%;
  margin: 3rem auto;
  border-bottom: 2px solid #efb300;
  text-align: center;
  padding-bottom: 1rem;
}

.main-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 80%;
  margin: 0 auto 9rem;
  gap: 2rem;
}

.main-cell {
  display: flex;
  flex-direction: column;
  text-align: center;
  align-items: center;
  gap: 0.5rem;
}

.main-cell img {
  aspect-ratio: 1/1;
  object-fit: cover;
  width: 50%;
}

@media (max-width: 768px) {
  .main-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

.section-sense {
  width: 50%;
  margin: 0 auto 9rem;
  text-align: center;
}

.section-sense h2 {
  border-bottom: 2px solid #efb300;
  padding-bottom: 1rem;
}

@media (max-width: 576px) {
  .section-sense {
    width: 80%;
  }
}

.open-main {
  color: #fff;
  background: #505050;
  padding: 2rem 4rem;
  display: flex;
  justify-content: center;
  text-align: center;
  width: 90%;
  margin: 0 auto;
}

.open-main h2 {
  color: #fff;
  border-bottom: 2px solid #efb300;
  padding-bottom: 0.5rem;
  width: fit-content;
}

.main-grid2 {
  width: 90%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: center;
}

.grid-text {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  justify-content: center;
  width: 90%;
  margin: 0 auto;
  padding: 2rem 0;
}

.grid-text .secondary-heading {
  border-bottom: 2px solid #efb300;
  padding-bottom: 0.5rem;
}

.main-grid2 img {
  aspect-ratio: 4/3;
  object-fit: cover;
}

@media (max-width: 768px) {
  .main-grid2 {
    grid-template-columns: 1fr;
  }

  .mv1 {
    grid-row: 1/2;
  }

  .mv2 {
    grid-row: 5/6;
  }
}