.wrapper {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: lightgrey; }

.calc {
  width: 1100px; }
  .calc__form {
    display: flex;
    flex-direction: column;
    width: 100%;
    background-color: white;
    border-radius: 5px;
    padding-top: 40px;
    padding-left: 140px;
    padding-right: 140px;
    padding-bottom: 90px; }
  .calc__title {
    margin-bottom: 80px;
    text-align: center;
    text-transform: uppercase; }
  .calc__line {
    -webkit-appearance: none;
    border-radius: 5px;
    background: #121212;
    outline: 0;
    height: 2px;
    position: absolute;
    bottom: 0;
    width: 100%; }
    .calc__line::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #121212;
      cursor: pointer; }
  .calc__row {
    display: flex;
    width: 100%;
    justify-content: space-between;
    margin-bottom: 40px; }
    .calc__row-1 {
      z-index: 150; }
    .calc__row-2 {
      z-index: 100; }
    .calc__row-3 {
      z-index: 50; }
    .calc__row-btn {
      justify-content: center;
      margin-bottom: 0; }
    .calc__row-item {
      width: 48%;
      display: flex;
      flex-direction: column; }
      .calc__row-item-terrain {
        position: relative; }
    .calc__row__title-text {
      font-size: 16px;
      margin-bottom: 10px; }
    .calc__row__title-input {
      margin-left: auto;
      border: 1px solid grey;
      width: 50px;
      height: 30px;
      padding: 9px;
      margin-right: 15px;
      display: flex;
      justify-content: center;
      align-items: center; }
    .calc__row-terrain {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
      position: absolute;
      top: -10px;
      width: 100%; }
      .calc__row-terrain .calc__row__title-text {
        margin-bottom: 0; }

.select {
  position: relative;
  width: 100%;
  height: 35px;
  cursor: pointer;
  background-color: white;
  border-radius: 2px;
  border-bottom: 2px solid grey;
  z-index: 100; }
  .select__terrain {
    width: 50px;
    border-bottom: 0; }
    .select__terrain .select__expand::after {
      display: none; }
    .select__terrain .select__label {
      padding-left: 0; }
      .select__terrain .select__label__item::before {
        display: none; }
  .select__expand {
    width: 0;
    height: 35px;
    position: absolute;
    top: 0;
    right: 0; }
    .select__expand::after {
      content: '\003E';
      position: absolute;
      top: 50%;
      right: 0;
      transform: translate(-50%, -50%) rotate(90deg) scaleY(1.75);
      color: #3e3e3e;
      font-size: 28px;
      pointer-events: none;
      z-index: 2;
      transition: all 250ms cubic-bezier(0.4, 0.25, 0.3, 1);
      opacity: .6; }
    .select__expand:hover::after {
      opacity: 1; }
    .select__expand:checked::after {
      transform: translate(-50%, -50%) rotate(90deg) scaleX(-1) scaleY(1.75); }
  .select__expandLabel {
    display: block;
    width: 100%;
    height: 35px;
    position: absolute;
    top: 0;
    left: 0;
    cursor: pointer; }
  .select__close {
    display: none; }
  .select__closeLabel {
    width: 100vw;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    display: none; }
  .select__items {
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 2px;
    padding-top: 35px; }
  .select__input {
    display: none; }
  .select__label {
    transition: all 250ms cubic-bezier(0.4, 0.25, 0.3, 1);
    display: block;
    height: 0;
    font-size: 14px;
    line-height: 35px;
    overflow: hidden;
    color: #5f5f5f;
    background-color: #fff;
    cursor: pointer;
    padding-left: 20px; }
    .select__label__item:before {
      position: absolute;
      content: '';
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background-color: #5f5f5f;
      top: 50%;
      left: 10px;
      transform: translate(0, -50%); }
    .select__label-placeholder {
      height: 35px;
      vertical-align: middle;
      position: absolute;
      top: 0;
      left: 0;
      opacity: .6;
      background-color: transparent;
      padding-left: 0; }
  .select__expand:checked + .select__closeLabel {
    display: block; }
    .select__expand:checked + .select__closeLabel + .select__options .select__label {
      height: 35px;
      background-color: #f5f5f5; }
      .select__expand:checked + .select__closeLabel + .select__options .select__label:hover {
        background-color: #9c9797;
        color: white; }
    .select__expand:checked + .select__closeLabel + .select__options + .select__expandLabel {
      display: none; }
  .select__input:checked + .select__label {
    height: 35px;
    margin-top: -35px; }

.calc__button {
  border: 2px solid gray;
  padding: 18px 35px;
  max-width: 185px; }