body {
  font-family: "Lato", Helvetica, Arial, sans-serif;
  font-size: 18px;
  background-color:#231942;
  color: honeydew;
}

h1 {
  text-align: center;
}

.container {
  width: 90%;
  max-width: 680px;
}

h1,
.container,
.output {
  margin: 20px auto;
}

label,
legend {
  font-weight: bold;
}

.input-container {
  display: flex;
  flex-direction: column;
}

button {
  cursor: pointer;
  text-decoration: none;
  background-color:#0f0b1b;
  border: 2px outset #5e548e;
  padding: 5px 10px;
  color: honeydew;
}

button,
input,
select {
  min-height: 24px;
}

fieldset,
label,
button,
input,
select {
  margin-bottom: 10px;
}

.output {
  border: 2px solid honeydew;
  padding: 10px;
  text-align: center;
}

.hide {
  display: none;
}

.output span {
  font-weight: bold;
  font-size: 1.2em;
}

.surplus {
  color: palevioletred;
}

.deficit {
  color: lightgreen;
}

#back-btn {
  background-color: #0f0b1b;
  border: 2px solid honeydew;
  border-radius: 4px;
  color: white;
  text-decoration: none;
  font-size: 1rem;
  margin: 20px auto;
  width: 15%;
  height: 20px;
  text-align: center;
  padding: 20px;
  display: block;
}