* {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  box-sizing: border-box;

}

body {
  background: #002339;
  color: #fff;
  height: 100vh;
  display: flex;
  align-items: center;


}

.container {
  margin: 12%;
  width: 90%;
  max-width: 700px;
}

.display {
  width: 100%;
  margin-top: 30px;
  margin-bottom: 30px;
  background: white;
  color: #002339;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 25px;
  border-radius: 7px;
}

.display input {
  width: 90%;
  font-size: 38px;
  letter-spacing: 1.2px;
  font-family: Arial, Helvetica, sans-serif;
  outline: none;
  border: none;
}

.display img {
  width: 40px;
  cursor: pointer;
}

.container h1 {
  font-family: "arial";
  font-weight: 700;
  font-size: 36px;
  line-height: 2.8rem;
}

.container h1 span {
  font-size: 44px;
  line-height: 2.8rem;
  color: #0fe28e;
  border-bottom: 5px solid #0fe28e;
}

.btn button {
  display: flex;
  padding: 15px 30px;
  background: #0fe28e;
  border-radius: 5px;
  outline: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.btn button img {
  width: 24px;
}

.btn button p {
  font-size: 24px;
  padding-left: 15px;
  font-weight: 600;
  color: white;
}

/*Responsive*/
@media only screen and (max-width:600px) {
  .container {
    margin: 12%;
    width: 90%;
    max-width: 330px;
  }

  .display {
    width: 100%;
    margin-top: 30px;
    margin-bottom: 30px;
    background: white;
    color: #002339;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 15px;
    border-radius: 7px;
  }

  .display input {
    width: 88%;
    font-size: 24px;
    letter-spacing: 1.2px;
    font-family: Arial, Helvetica, sans-serif;
    outline: none;
    border: none;
  }

  .display img {
    width: 30px;
    cursor: pointer;
  }

  .container h1 {
    font-family: "arial";
    font-weight: 700;
    font-size: 26px;
    line-height: 1.8rem;
  }

  .container h1 span {
    font-size: 34px;
    line-height: 2.8rem;
    color: #0fe28e;
    border-bottom: 5px solid #0fe28e;
  }

  .btn button {
    display: flex;
    padding: 10px 20px;
    background: #0fe28e;
    border-radius: 5px;
    outline: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
  }

  .btn button img {
    width: 16px;
  }

  .btn button p {
    font-size: 18px;
    padding-left: 10px;
    font-weight: 600;
    color: white;
  }
}