/* Apply background image to the body */
body {
  background-image: url('https://www.transparenttextures.com/patterns/asfalt-dark.png'); /* You can change this URL */
  background-repeat: repeat;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

/* Decorated box using CSS box model properties */
.box {
  margin: 50px auto;
  padding: 20px;
  border: 5px solid #4A90E2;
  border-radius: 15px;
  width: 60%;
  height: auto;
  background-color: #ffffffcc; /* semi-transparent white */
  box-sizing: border-box;
  display: block;
}