{
  background image 
  margin: 0%;
  padding: 0;
  box-sizing: border-box;
}
body{
  background-image:url(https://i.pinimg.com/1200x/ab/ff/24/abff24582a6463f554935321d0fbb21f.jpg) ;

}
.one{
  border-radius: 15px;
  background-color: aqua;
}
h2{
  border: 15px solid black;
  font-display: swap;
}