body {
  background-color: rgb(72, 12, 12);
  color: white;
  padding: 10px;
}

body, .title-bar-text, .window-body {
  font-family: '宋体', '华文宋体', '黑体', 'Pixelated MS Sans Serif', Arial, sans-serif;
}

#contents {
  width: 70%;
  margin: 0 auto;
}

#title-box img {
  display: block;
  margin: 0 auto;
}

#visitor {
  margin: 20px 0 50px;
  text-align: center;
  font-size: 30px;
  font-weight: bold;
  font-style: italic;
}

#visitor span {
  color: blue;
}

#self-intro {
  margin-bottom: 50px;
  padding-left: 50px;
  color: yellow;
}

#self-intro h1 {
  font-size: 30px;
  font-style: italic;
  color: red;
}

#post-box {
  margin-bottom: 20px;
}

#post-box .title-bar-text {
  font-size: 20px;
  font-weight: bold;
  padding: 5px;
}

#post-box .title-bar-controls {
  padding-right: 2px;
}

#post-box .title-bar-controls button {
  width: 20px;
  height: 20px;
}

#post-box .title-bar-controls button {
  background-position: center;
}

#post-box .title-bar-controls button[aria-label="Minimize"] {
  background-position: bottom 5px left 6px;
}

#post-box .window-body {
  font-size: 15px;
  color: black;
}

#post-box #comment-box h1 {
  margin-top: 30px;
  font-size: 20px;
  font-weight: bold;
  font-style: italic;
}

#post-box #comment-box p span {
  color: red;
}

#post-box #comment-box p b {
  color: green;
}

#popup {
  position: fixed;
  display: none;
  justify-content: center;
  align-items: center;
  width: 90%;
  height: 90%;
  top: 5%;
  left: 5%;
  right: 5%;
  bottom: 5%;
  z-index: 100;
  background-color: black;
  border: 1px solid white;
}

#popup img {
  width: 20%;
  height: 20%;
  object-fit: contain;
}

#popup div {
  font-size: 20px;
  margin-left: 10px;
}

#popup b {
  color: red;
}

#popup span {
  color: aquamarine;
  font-style: italic;
}