.sponsors-header {
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.7)),
    url("../media/sfondo-physis_linee.svg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin: auto;
  text-align: center;
}
.sponsors-header p a {
  color: var(--physis-dashed-color);
}
.tiers-grid h2 {
  font-weight: 800;
}

.diamond-tier,
.platinum-tier,
.gold-tier,
.silver-tier,
.bronze-tier,
.white-tier {
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.7),
      rgba(255, 255, 255, 0.7)
    ),
    url("../media/sfondo-physis_linee_p_w_bg.svg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin: auto;
  text-align: center;
  padding: 50px 30px;
  border-radius: 30px;
  max-width: 1000px;
}
img {
  display: block;
  margin: 0 auto;
  max-height: 120px;
}