body {
  background-color: #1b2021;
  font-family: "Bebas Neue", cursive;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.container {
  flex-wrap: wrap;
  margin-top: 25px;
  border: 1px solid #ffffff;
  border-radius: 3%;
  width: 40%;
  height: 60%;
}
.heading {
  margin: auto;
  text-align: center;
  display: flex;
  justify-content: center;
}
h1 {
  font-size: 70px;
  color: #ffffff;
}
span {
  color: yellow;
  border-bottom: 5px white solid;
}
h2 {
  font-size: 30px;
  color: #ffffff;
}

input {
  outline: none;
  background: none;
  color: #c1c1c1;
  font-size: 2em;
  border: none;
  border-bottom: 2px white solid;
}
input::placeholder {
  color: white;
  font-size: 16px;
}
.button-div {
  display: flex;
  justify-content: center;
}
.btn,
.btn:hover {
  cursor: pointer;
  margin-top: 20px;
  background-color: yellow;
  color: #1b2021;
  border-color: #1b2021;
  font-size: 20px;
  width: 50%;
}

.btn:hover {
  background-color: #ffffff;
}
.height {
  display: flex;
  flex-direction: column;
  width: 50%;
  justify-content: center;
  margin: auto;
}
.weight {
  display: flex;
  flex-direction: column;
  width: 50%;
  justify-content: center;
  margin: auto;
}

#output {
  color: white;
  font-size: 50px;
}
#output2 {
  color: yellow;
  font-size: 30px;
}
footer {
  margin-top: 9.5rem;
  color: #ffffff;
  letter-spacing: 2px;
}
footer p {
  padding-top: 1rem;
}
@media (max-width: 700px) {
  .container {
    width: 60%;
  }
  .height {
    margin-top: 60px;
    width: 90%;
  }
  .weight {
    width: 90%;
  }
}
@media (max-width: 450px) {
  .container {
    width: 100%;
  }
  .heading h1 {
    font-size: 35px;
  }
  span {
    border-bottom: 2px white solid;
  }
  h2 {
    font-size: 28px;
  }
  .height {
    margin-top: 60px;
    width: 90%;
  }
  .weight {
    width: 90%;
  }
}