* {
  margin: 0;
  padding: 0;
  font-family: "poppins", sans-serif;
  box-sizing: border-box;
}
body {
  background: #002339;
  color: #fff;
}
.container {
  width: 100%;
  margin: 12%;
  max-width: 1000px;
  padding: 20px;
}
.display {
  width: 100%;
  margin-top: 50px;
  margin-bottom: 30px;
  background: #333;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 25px;
  border-radius: 5px;
}
.display img {
  height: 70px;
  background: #333;
  color: #002339;
  cursor: pointer;
}
.container h1 {
  font-size: 50px;
  font-weight: 15%;
}
.container h1 span {
  color: #019f55;
  border-bottom: 4px solid #019f55;
  padding-bottom: 10px;
}
.display input {
  border: 0;
  outline: 0;
  font-size: 40px;
  background: transparent;
  color: #fff;
}
button img {
  width: 50px;
  border: 0;
  outline: 0;
  background: transparent;
  cursor: pointer;
  margin-right: 15px;
}
.container button {
  border: 0;
  outline: 0;
  background: #019f55;
  color: #002339;
  font-size: 25px;
  font-weight: 400;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 15px 20px;
  border-radius: 5px;
  cursor: pointer;
}
@media (max-width: 600px) {
  .container {
    margin: 20px;
    padding: 15px;
  }

  .container h1 {
    font-size: 32px;
    text-align: center;
  }

  .display {
    flex-direction: column;
    padding: 15px;
    gap: 15px;
  }

  .display input {
    font-size: 24px;
    width: 100%;
    text-align: center;
  }

  .display img {
    height: 50px;
  }

  .container button {
    font-size: 20px;
    padding: 12px 16px;
    flex-direction: column;
  }

  button img {
    width: 50px;
    margin: 0 0 10px 0;
  }
}