* {
  box-sizing: border-box;
}

html {
  font-family: Arial, Helvetica, sans-serif;
  height: 100%;
}

body {
  height: inherit;
  display: flex;
  justify-content: center;
  align-items: center;
  --custom-minwidth: 320px;
  --custom-maxwidth: 1200px;
}

article {
  min-width: var(--custom-minwidth);
  max-width: var(--custom-maxwidth);
  position: relative;
  width: 70%;
  height: 600px;
  border: 3px solid black;
}

.progress {
  width: calc(
    progress(
        var(--container-width),
        var(--custom-minwidth),
        var(--custom-maxwidth)
      ) * 100%
  );
  height: 4px;
  background-color: red;
  position: absolute;
  top: 0;
  left: 0;
}

.background {
  position: absolute;
  inset: 0;
  background-image: url(../../shared-assets/images/examples/wide-background.jpg);
  background-position-x: calc(
    progress(
        var(--container-width),
        var(--custom-minwidth),
        var(--custom-maxwidth)
      ) * 100%
  );
}

.content {
  position: absolute;
  inset: 0;
  padding: 20px;
  background-color: rgb(
    calc(
        255 *
          progress(
            var(--container-width),
            var(--custom-minwidth),
            var(--custom-maxwidth)
          )
      )
      calc(
        255 *
          progress(
            var(--container-width),
            var(--custom-minwidth),
            var(--custom-maxwidth)
          )
      )
      255 / 0.5
  );
  opacity: calc(
    (
        progress(
            var(--container-width),
            var(--custom-minwidth),
            var(--custom-maxwidth)
          ) / 2
      ) + 0.5
  );
}

.content h1,
.content p {
  background-color: rgb(255 255 255 / 0.5);
  padding: 5px;
}

.credit {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 300px;
  font-size: 0.8rem;
  margin: 0;
}