body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(to bottom right, blue, pink);
  color: #333;
}

header {
  text-align: center;
  padding: 20px;
  background-color: white;
  border-bottom: 2px solid #ccc;
}

h1 {
  margin: 0;
  font-size: 40px;
}

.UNO h4 {
  margin: 5px 0 10px 0;
  font-size: 20px;
  color: #555;
}

.logo {
  width: 120px;
  height: auto;
  margin: 10px auto;
  display: block;
}

main {
  padding: 20px;
}

.parrafo {
  padding: 15px;
  margin: 20px 0;
  border-radius: 8px;
  color: white;
}

.uno {
  background-color: blue;
}

.dos {
  background-color: green;
}

.tres {
  background-color: purple;
}
.cuatro {
  background-color: red;
}

footer {
  text-align: center;
  padding: 10px;
  background-color: yellow;
  color: black;
  font-size: 14px;
}