.announcement {
  display:none;
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5); /* Black background with opacity */
  /* Centering the content using Flexbox */
  justify-content: center;
  align-items: center;
}

.announcement-content {
  background-color: #fefefe;
  padding: 2px;
  border: 1px solid #888;
  border-radius: 8px;
  position: relative;
}

.close-button {
  color: #aaa;
  float: right;
  font-size: 38px;
  font-weight: bold;
  position: absolute;
  top: 0;
  right: 5px;
  cursor: pointer;
}

.close-button:hover,
.close-button:focus {
  color: #000;
  text-decoration: none;
  cursor: pointer;
}