style.css

* {
  margin: 0px;
  padding: 0px;
  outline: 0;
}
.wrapper {
  width: 300px;
  height: 330px;
  background: #7952b3;
  margin: 0 auto;
  padding: 50px;
  margin-top: 100px;
}
.wrapper h1 {
  font-family: sans-serif;
  font-weight: bold;
  text-align: center;
  margin-bottom: 30px;
}
.div-h1 h1 {
  padding: 3px;
  color: #ffffff;
  outline: #ffffff;
  font-size: 35px;
}
.wrapper label {
  font-size: 16px;
  font-weight: bold;
  font-family: sans-serif;
  color: rgb(0, 0, 0);
}
.wrapper .input-fild {
  width: 250px;
  height: 20px;
  margin-top: 10px;
  outline: none;
  padding: 5px;
  font-size: 16px;
  background: rgb(209, 251, 255);
}
.wrapper .input-fild-result {
  width: 183px;
  height: 22px;
  margin-top: 20px;
  padding: 5px;
  font-size: 16px;
  background: rgb(209, 251, 255);
}
.button {
  width: 49px;
  height: 35px;
  background: #31d2f2;
  margin-top: 25px;
}