body {
  background-image: url('circuit-tile.png');
  background-repeat: repeat;
}

.logo__link {
  text-transform: none;
}

.annotated-image {
  display: block;
  margin-left: auto;
  margin-right: auto;
  border-radius: 10px;
  border: 3px solid #000000;
  background-color: #ffffff;
  padding: 10px;
  width: 80%;
  text-align: center;
}

figcaption > P {
  margin: 0.5rem 0 0.1rem;
  font-weight: 550;
}

.post__thumbnail {
   background: repeating-radial-gradient(
      circle,
      transparent,
      transparent 20px,
      black 20px,
      black 45px
  );
}

.post__thumbnail img {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 25%;
  border-radius: 5rem;
}