*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

body {
  opacity: 0;
  animation: fadeIn 1.2s forwards;
  animation-delay: 0.2s;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #4A71A9;
  min-height: 100vh;
  margin: 0;

  background-image: url("https://files.catbox.moe/7g2nb6.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.container{
  width: 550px;
  height: 450px;
}
.header{
  text-align: center;
  margin-bottom: 50px;
    text-shadow:  
    -1px -1px 0 #000,  
     1px -1px 0 #000,
    -1px  1px 0 #000,
     1px  1px 0 #000;
}
.header h2{
  font-weight: 400;
  color: #FAFFD8
}
.main-content{
  width: 100%;
  height: 300px;
  padding: 50px 40px;
  background-image: url("https://files.catbox.moe/0mme30.jpg");
  border-radius: 18px;
  box-shadow: 0 25px 31px rgba(44,29,29,.5);
}
.text-area{
  text-align: center;
  font-size: 25px;
  color: #E3EEFF;
  line-height: 1.5;
  text-shadow: 
    -1px -1px 0 #000,  
     1px -1px 0 #000,
    -1px  1px 0 #000,
     1px  1px 0 #000;
}
.main-content .button-area{
  display: grid;
  place-items: center;
  margin-top: 20px;
  padding: 10px 0;
}
.button-area .btn button{
  background-color: #F3F7FF;
  color: #001025;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
  border-radius: 5px;
  box-shadow: 3px 3px 10px rgba(67, 40, 24, 0.2);
  font-size: 16px;
  cursor: pointer;
  border: none;
  outline: none;
  padding: 12px 15px;
}
.button-area .btn button:active{
  background-color: #4A71A9; 
}