*, *:before, *:after
  {
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
  font-family: system-ui, Arial, Helvetica, sans-serif;
  font-size: 16px;
  font-weight: 300;
  line-height: 1.0;
  hyphens: auto;
  overflow-wrap: break-word;
  }

html, body {height: 100%;} 

body 
  { 
  display: flex;
  justify-content: center;
  align-items: center;

  line-height: 1.6; 
  background-color: #f4f4f9; 

  border: 5px solid #abc; 
  }

.laatikko 
  { 
  border: 1px solid #ccc; 
  margin: 40px;
  padding: 25px; 
  border-radius: 12px; 
  max-width: 550px; 
  height: 600px;
  background: white; 
  box-shadow: 0 2px 10px rgba(0,0,0,0.1); 
  }

.laatikko h2
  {
  font-size: 2.5rem;
  font-weight: 900;
  color: #ccd;
  text-align: center;
  margin-bottom: 1rem;
  }

label
  {
  font-weight: 600;
  color: #789;
  }

input, button 
  { 
  padding: 10px; 
  margin: 8px 0; 
  width: 100%; 
  box-sizing: border-box; 
  border: 1px solid #ddd; 
  border-radius: 4px; 
  }

button 
  { 
  background-color: #007bff; 
  color: white; 
  cursor: pointer; 
  font-size: 16px; 
  border: none; 
  }

button:hover 
  { 
  background-color: #0056b3; 
  }

#tulos 
  { 
  margin-top: 20px; 
  padding: 15px; 
  background: #e9ecef; 
  border-radius: 8px; 
  white-space: pre-wrap; 
  }