body {
  margin: 40px auto;
  max-width: 650px;
  font-size: 18px;
  padding: 0 10px;
}

ul {
  margin: 0;
}

.pic {
  float: right;
  width: 200px;
}

.pic-small {
  float: right;
  width: 100px;
  display: none;
}

.lightbox {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  padding: 1em;
  backdrop-filter: blur(2px);
  visibility: hidden;
  opacity: 0;
  transition: visibility 0s, opacity 0.2s linear;
}

.lightbox:target {
  visibility: visible;
  opacity: 1;
}

.lightbox span {
  display: block;
  width: 100%;
  height: 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}

@media (max-width: 650px) {
  body {
    font-size: 14px;
  }

  .pic {
    display: none;
  }

  .pic-small {
    display: block;
  }
}

@media (width > 650px) {
  p {
    text-indent: 2em;
  }
}

.headpar {
  margin: 18px 0;
}

.content {
  text-align: justify;
}