body {
  background-color: #eeeeff;
  font-family: Arial,Verdana,Sans-Serif;
}
div.main {
  width: 1200px;
  height: 1000px;
  background-color: #ddddff;
  margin: auto;
}

h1 {
  text-align:center;
}
img {
  width: 1024px;
  height: 768px;
  display: block;
  margin: auto;
}

div.pic {
  margin-bottom: 50px;
}
div.msg {
  margin-top: 50px;
  background-color: #6f42c1;
  margin-left: auto;
  margin-right: auto;
  padding: 10px;
  text-align:center;
  color: white;
  width: 50%;
  margin-bottom: 20px;
  border-radius: 20px;
}
div.btn {
  margin-top: 50px;
  margin: auto;
  padding: 10px;
  text-align:center;
  color: white;
  width: 200px;
}
div.btn button {
  background-color: #6f42c1;
  width: 200px;
  height: 40px;
  color: white;
  border-radius: 20px;
}