@import url("https://fonts.googleapis.com/css2?family=Orbitron:wght@400..900&display=swap");

.calculator {
  font-family: "Orbitron", sans-serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-style: normal;
  background-color: #171717;
  width: fit-content;
  padding: 3rem 1.5rem;
  border-radius: 2rem;
  width: 350px;
  margin: 4rem auto 0;
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.calculator input {
  background-color: darkolivegreen;
  padding: 0.5rem 0.5rem 0.25rem;
  outline: none;
  border: none;
  color: black;
  text-align: right;
  width: 100%;
  font-family: inherit;
  font-size: 1.5rem;
  margin-bottom: -1px;
}

.calculator input::-webkit-outer-spin-button,
.calculator input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.calculator input[type="number"] {
  -moz-appearance: textfield;
}

.calculator #prefixResult {
  background-color: darkolivegreen;
  min-height: 41px;
  padding: 0.25rem 0.5rem 0.5rem;
  color: black;
  text-align: right;
  font-family: inherit;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.calculator select {
  font-family: "Karla", sans-serif;
  width: 100%;
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  border: 2px solid black;
}

.calculator button {
  font-family: "Karla", sans-serif;
  text-transform: uppercase;
  width: 100%;
  font-size: 1.25rem;
  padding: 1rem;
  background: #525252;
}