.mainbody {
  font-family: Arial, sans-serif;
  background-color: #fafafa;
  color: #222;
  line-height: 1.6;
  margin:0px;
  padding: 0;
  display: flex;
  align-content: center;
}

.mainbody .container {
  max-width: 800px;
  margin: 80px auto;
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}



.mainbody h1 {
  font-size: 28px;
  text-align: center;
  margin-bottom: 10px;
}

 .mainbody.date {
  text-align: center;
  color: #666;
  font-size: 14px;
}

.mainbody h2 {
  color: #2c3e50;
  margin-top: 30px;
  border-bottom: 1px solid #eee;
  padding-bottom: 6px;
}

.mainbody p, .mainbody ul {
  margin-bottom: 16px;
}

.mainbody ul {
  list-style-type: disc;
  margin-left: 20px;
}

.mainbody a {
  color: #0077cc;
  text-decoration: none;
}

.mainbody a:hover {
  text-decoration: underline;
}