* {
  margin: 0;
  padding: 0;
}

:root {
  --primary-bg: #b45309c7;
  --brown: #b45309;
}

.container {
  max-width: 60%;
  margin: auto;
}

section {
  margin: 0.5rem 0;
  padding: 1rem;
  border-bottom: 1px solid black;
}
section:last-child {
  border-bottom: none;
}
section p,
section ul {
  margin-top: 1rem;
}

section li {
  text-align: left;
  margin-top: 0.2rem;
}

li span {
  color: var(--brown);
  font-weight: bold;
}

.btn {
  display: inline-block;
  margin-top: 1.5rem;
  text-decoration: none;
  padding: 0.5rem 1.5rem;
  background-color: var(--brown);
  color: white;
  border-radius: 1rem;
  border: none;
  transition: all 0.5s;
}

.btn:hover {
  background-color: var(--primary-bg);
}

/* calulate page */

form {
  margin-top: 1rem;
}

form label {
  display: inline-block;
  cursor: pointer;
}
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"] {
  background-color: white;
  font-size: 0.8rem;
  outline: none;
  border: none;
  border-radius: 10px;
  padding: 0.5rem;
  -moz-appearance: textfield;
}

.hidden {
  display: none;
}
form + p {
  font-size: 1.1rem;
  font-weight: 600;
}

/* quiz */
.question {
  display: block;
  font-size: 1.5em;
  margin-top: 0.3rem;
  margin-bottom: 0.5em;
  margin-left: 0;
  margin-right: 0;
  font-weight: bold;
}
.question ~ label {
  font-size: 1.2rem;
  font-weight: 600;
  padding: 0 1rem;
}
input[type="radio"] {
  cursor: pointer;
}
/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type="number"] {
  -moz-appearance: textfield;
}
/* mobile design */
@media only screen and (max-width: 768px) {
  .container {
    max-width: 90%;
  }
}