body {
  background-image: url('backg.jpg');
  background-size: cover;
  background-position: center;
  color: black;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  text-align: center;
}

main {
  text-align: center;
  margin-top: 50px; 
}

.content h1, .content h2, .content p {
  margin: 10px 0;
}

h1 {
  font-size: 3em;
  margin-top: 0;
}

h2 {
  font-size: 1.5em;
}

p {
  font-size: 1.2em;
}

.documentation {
  padding: 20px;
  background-color: rgba(255, 255, 255, 0.8); 
  margin-top: 20px;
  border-radius: 8px;
  max-width: 1200px;
  text-align: center; 
}

.documentation h3 {
  font-size: 2em;
  margin-bottom: 10px;
}

.documentation p, .documentation ul {
  font-size: 1.2em;
}

.documentation ul {
  list-style-type: none;
  padding-left: 0;
}

.documentation ul li {
  margin: 8px 0;
}

.additional-header {
  margin-top: 20px;
  text-align: center; 
  background-color: rgba(255, 255, 255, 0.8); 
  padding: 20px;
  border-radius: 8px;
  max-width: 800px;
}

.additional-header h4 {
  font-size: 2em;
  margin-bottom: 10px;
}

.additional-header p {
  font-size: 1.2em;
}


.prototype-image {
  width: 80%; 
  max-width: 600px; 
  margin: 20px 0; 
  display: block; 
  margin-left: auto;
  margin-right: auto;
}

.prototype-video {
  width: 80%; 
  max-width: 800px; 
  margin: 20px 0; 
  display: block; 
  margin-left: auto;
  margin-right: auto;
}