.content-box {
  position: relative;               /* allows overlay positioning */
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  padding: 20px;
  margin: 20px 0;
  border-radius: 8px;
  color: white;                     /* bright text */
  font-weight: bold;                 /* very bold */
  font-family: "Arial", "Helvetica", sans-serif;
  overflow: hidden;                 /* keeps overlay inside */
}

.content-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5); /* dim image */
  border-radius: 8px;
  z-index: 0;                         /* behind the text */
}

.content-box p {
  position: relative;                /* ensures text is above overlay */
  z-index: 1;
  margin: 0;
}