.act-section {
  max-width: 800px;
  padding: 0 10px 0 10px;
  margin: auto;
}

.img-header {
  width: 100%;
  min-height: 50vh;
  height: 30vw;
  object-fit: cover;
  margin-top: 20px;
  position: relative;
  background-color: black;
}

.img-header img {
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: 0.8;
}
.img-header h2 {
  font-size: 2.2em;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  color: white;
  text-shadow: 0px 2px 5px #0008;
}