body {
  font-family: Arial, sans-serif;
}

label {
  font-weight: bold;
}

header {
  background-color: #333;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}


.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 50px;
}

h1 {
  font-size: 36px;
  margin-bottom: 30px;
 align-text: center;
}

#file-upload {
  margin-bottom: 20px;
}

canvas {
  margin-top: 20px;
  border: 1px solid black;
}



nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

nav li {
  display: inline-block;
  margin-right: 20px;
}

nav li:last-child {
  margin-right: 0;
}

nav a {
  color: #fff;
  text-decoration: none;
}

main {
  padding: 20px;
}

h1, h2 {
  font-size: 36px;
  margin: 0 0 20px;
}

p {
  font-size: 18px;
  line-height: 1.5;
  text-align: justify;
}