body {
  font-family: "Arial", sans-serif;
  background: linear-gradient(to right, #42275a, #734b6d);
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

#calculator {
  background: linear-gradient(to bottom right, #ff7e5f, #feb47b);
  width: fit-content;
  border-radius: 0.5rem;
  box-shadow: 0 0 1.25rem rgba(0, 0, 0, 0.2);
  padding: 1.25rem;
  text-align: center;
}

header {
  position: fixed;
  top: 0;
  width: 97vw;
  background-color: #1d4747;
  z-index: 999;
  padding: 0 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to right, #42275a, #734b6d);
}

input {
  width: 15.125rem;
  height: 2.5rem;
  padding: 0.625rem;
  margin-bottom: 0.625rem;
  font-size: 1.13rem;
  border: 0.06rem solid #ccc;
  border-radius: 0.25rem;
  background-color: #fff;
  color: #333;
  display: inline-block;
}

button {
  width: 4.375rem;
  height: 4.375rem;
  margin: 0.3rem;
  font-size: 1.13rem;
  cursor: pointer;
  border: 0.06rem solid #ccc;
  border-radius: 0.25rem;
  background: linear-gradient(to bottom right, #ff7e5f, #feb47b);
  color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

button:active {
  background: linear-gradient(to bottom right, #f96a4e, #f68067);
}

#result {
  font-size: 2.25rem;
  font-weight: bold;
  color: #333;
}
@media (max-width: 1000px) {
  nav {
    width: auto;
    background: linear-gradient(to right, #42275a, #734b6d);
  }
}