body {
  background-color: #393939;
}

#nav {
  color: #a4c7b8;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-body {
  height: 600px;
  width: 300px;
  background-color: #2b2b2b;
  display: flex;
  align-items: center;
  border-radius: 20px;
  margin: auto;
  margin-top: 10%;
}

.inner-grid {
  height: 90%;
  width: 100%;
  display: grid;
  grid-template-rows: 1fr 4fr 12fr;
}

.main-row {
  border: 1px solid teal;
}