style.css

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body{
  background-color: antiquewhite;
  /* border: 1px solid black; */
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.main{
  display: flex;
  /* width: 50vh; */
  flex-direction: column;
  border: 1px solid black;
  height : 70vh;
  width: 80vh; 
  border-radius: 20px;
}
  
.main h1{
  /* display: block; */
  padding: 20px;
  margin-bottom: 5px;
  text-align: center;
  background-color: black;
  color: white;
  border-radius: 20px 20px 0px 0px;;

}

.qr-input{
  width: 90%;
  margin: 20px;
  padding: 15px;
  border-radius: 10px;
  border: none;
  box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
}

.qr-button{
  width: 90%;
  margin: 20px;
  margin-top: 1px;
  padding: 15px;
  border-radius: 10px;
  border: none;
  background-color: green;
  color: white;
  box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
}

.qr-img{
  width: 150px;
  height: 150px;
  margin: 20px auto; /* This centers the image */
  border: 1px solid black;
}