.collapsible__open, .collapsible__close {
  color: #3f51b5;
  user-select: none; }
  .collapsible__open:hover, .collapsible__close:hover {
    cursor: pointer; }

.collapsible__close {
  display: none; }

.collapsible__content {
  visibility: hidden;
  overflow: hidden;
  height: 0;
  opacity: 0;
  transition: opacity 300ms ease; }

.collapsible_opened .collapsible__open {
  display: none; }

.collapsible_opened .collapsible__close {
  display: block; }

.collapsible_opened .collapsible__content {
  visibility: visible;
  height: auto;
  opacity: 1;
  margin: 15px auto; }

.tabs {
  outline: 2px solid #ddd;
  padding: 15px; }
  .tabs__titles {
    margin-bottom: 20px; }
  .tabs__title {
    margin-bottom: 10px;
    display: inline-block;
    border-bottom: 2px solid #ddd;
    transition: border-color 100ms ease-out;
    user-select: none; }
    .tabs__title:not(:last-child) {
      margin-right: 10px; }
    .tabs__title:hover {
      cursor: pointer;
      border-color: #888; }
    .tabs__title_active, .tabs__title_active:hover {
      border-color: #222;
      cursor: normal; }

.tab {
  display: none; }
  .tab_active {
    display: block; }

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
  line-height: 1.5;
  background: #fff;
  --font-family-monospace: source-code-pro, Menlo, Monaco, Consolas, "Courier New", monospace; }

input,
label,
select,
button,
textarea {
  margin: 0;
  border: 0;
  padding: 0;
  display: inline-block;
  vertical-align: middle;
  white-space: normal;
  background: none; }

button,
input,
textarea,
select {
  box-sizing: border-box; }
  button:focus,
  input:focus,
  textarea:focus,
  select:focus {
    outline: none; }

textarea {
  vertical-align: top;
  overflow: auto; }

code {
  font-family: var(--font-family-monospace); }

a {
  text-decoration: none; }
  a:hover, a:visited {
    text-decoration: none; }

.app {
  --content-padding: 20px;
  --header-height: 74px;
  display: flex;
  flex-direction: column; }
  .app-header {
    height: var(--header-height); }
  .app-content {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - var(--header-height)); }
  .app-footer {
    margin-top: auto; }

.app .header {
  background: #000;
  color: #fff;
  line-height: 40px;
  font-size: 15px; }
  .app .header a, .app .header a:hover, .app .header a:active, .app .header a:visited {
    color: #fff;
    text-decoration: none; }
  .app .header__container {
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    padding: 0 var(--content-padding);
    max-width: 800px; }
  .app .header__top-content {
    margin-right: 20px; }
    .app .header__top-content_right {
      margin-left: auto;
      margin-right: 0; }
  .app .header__navigation {
    height: 35px;
    line-height: 35px;
    background: #444;
    margin-top: -1px; }
  .app .header__navigation-content {
    text-align: center;
    font-size: 14px;
    max-width: 800px;
    margin: auto;
    padding: 0 var(--content-padding); }
    .app .header__navigation-content a:hover {
      color: #ffbf61; }
  .app .header__navigation-element {
    margin: 0 14px 0 0; }

@media (min-width: 320px) and (max-width: 480px) {
  .header__navigation {
    height: 35px; }
  .header__navigation-content {
    overflow: scroll;
    white-space: nowrap; } }

.footer {
  background: #000;
  margin: 0 auto;
  padding: 25px var(--content-padding) 30px;
  max-width: 100%;
  font-size: 11px;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: #fff; }
  .footer a {
    color: #fff; }
    .footer a:hover {
      text-decoration: underline; }

