body {
  background-image: url("https://files.catbox.moe/sp0ab6.png");
  background-repeat: repeat;
  font-family: Georgia;
  width: 900px;
  margin: 0px auto;
  padding: 25px;
  z-index: 2; 
}

.header {
  background:#EFBCE7;
    margin-top:0px;
    margin-bottom:16px;
    padding:16px;
  display:flex;
}

.post{
  background:#EFBCE7;
  padding:16px;
  margin-bottom:32px;
}