/*--------------------*/
* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  cursor: pointer;
}

li {
  list-style: none;
}

h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #333;
}

h3 {
  color: #333;
  margin-bottom: 15px;
}

p {
  font-size: 100%;
  line-height: 1.4;
  margin-bottom: 15px;
  color: #555;
}

.btn {
  display: inline-block;
  background: #33cc33;
  color: #fff;
  font-weight: 700;
  text-transform: uppercase;
  padding: 15px 30px;
  margin: 30px 0;
  border-radius: 5px;
  border-bottom: 3px solid #009900;
}

.btn:hover {
  background: #00cc66;
  -webkit-transition: 0.3s;
  -o-transition: 0.3s;
  transition: 0.3s;
}

/*-------------*/
body {
  font-family: "Roboto", sans-serif;
  content-visibility: auto;
}

.main__screen {
  position: relative;
  background: #c4c4c4 url(../img/bg.jpg) center center no-repeat;
  background-size: cover;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  width: 100%;
  height: 100vh;
}

.header {
  background: #c4c4c4;
  width: 100%;
  padding: 8px 0;
  -webkit-box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.15);
  box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.15);
}

.inner_header {
  position: fixed;
  top: 0;
  z-index: 99;
}

.container {
  width: 80%;
  margin: 0 auto;
}

.row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}

.header__nav {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

.nav__item {
  margin-left: 24px;
}

.nav__link {
  color: #fff;
  text-transform: uppercase;
}

.main {
  width: 100%;
}

.main__info {
  text-align: center;
}

.suptitle {
  color: #333;
  font-size: 36px;
}

.main__title {
  font-size: 48px;
  color: #333;
  margin: 25px 30px 40px;
  text-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
}

.subtitle {
  display: block;
  color: #333;
  font-size: 28px;
  margin-bottom: 24px;
}

.main__btn {
  padding: 20px 40px;
  -webkit-box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
  box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
}

.footer {
  width: 100%;
  padding: 30px 0;
}

.footer__info {
  color: #fff;
  text-align: center;
}

.footer__social {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  color: #fff;
}

.social__item {
  margin-left: 24px;
}

.social__item a {
  font-size: 24px;
  color: #fff;
}

.main__wrap {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  margin-top: 54px;
}

.sidebar {
  position: absolute;
  top: 0;
  left: 0;
}

.sidebar__nav {
  position: fixed;
  background: #e5e5e5;
  width: 320px;
  overflow-y: auto;
  height: 100%;
  padding: 60px;
  -webkit-box-shadow: 4px 0px 4px rgba(0, 0, 0, 0.25);
  box-shadow: 4px 0px 4px rgba(0, 0, 0, 0.25);
}

.toggle {
  position: absolute;
  right: 40px;
  z-index: 99;
}

.sidebar__menu-item {
  padding: 10px;
  margin-bottom: 10px;
  border: 1px solid #ccc;
}

.sidebar__ink {
  color: #333;
}

.content {
  width: 100%;
  margin: 0 18% 0 18%;
}

.content__container {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  width: 80%;
  margin: 0 auto;
  padding-bottom: 40px;
}

.sub__menu {
  position: absolute;
  top: 30px;
  left: -80px;
}

.sub__menu li {
  margin-bottom: 20px;
}

.open__modal,
.hide__sidebar {
  background: transparent;
  font-size: 24px;
  color: #ccc;
}

.open__modal:hover,
.hide__sidebar:hover {
  color: #999;
}

.content__header {
  width: 100%;
  text-align: center;
  padding: 60px 0 45px;
}

.content__title {
  font-size: 36px;
  margin-bottom: 30px;
  font-weight: 500;
  color: #333;
}

.subtitle {
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  color: #333;
}

.content__quiz {
  background: #e5e5e5;
  width: 100%;
  margin: 0 auto;
  margin-bottom: 50px;
  padding: 34px 0;
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  color: #333;
}

.answer-item {
  position: relative;
  background: #e5e5e5;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  padding: 30px 40px;
  margin-bottom: 32px;
  overflow: hidden;
  background-color: rgba(0, 0, 0, 0.1);

  backdrop-filter: blur(5px);
}

.item__num {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  width: 12%;
  z-index: 9;
}

.answer__num {
  margin-right: 20px;
  padding: 20px;
  background: #ccc;
  border-radius: 50%;
}

.answer__body {
  display: block;
  width: 100%;
}

.answer {
  font-size: 18px;
  font-weight: 500;
  color: #333;
}

.answer__row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
}

.user-answer {
  background-color: #fff;
  width: 70%;
  padding: 13px;
  font-size: 18px;
  border: 0;
  margin-right: 20px;
  -webkit-box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
  box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
  border-radius: 5px;
  outline: none;
}

button {
  cursor: pointer;
  border: none;
  outline: none;
}

.correctly {
  margin-bottom: 20px;
  font-size: 18px;
  font-weight: 500;
}

summary {
  cursor: pointer;
  color: #777;
  outline: none;
}

.footer__inner {
  position: relative;
  background: #000;
  padding: 15px 0;
  z-index: 99;
}

.modal {
  display: none;
  background: #ccc;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 999;
}

.modal__wrap {
  padding: 15%;
}

.close__modal {
  background: transparent;
  position: absolute;
  top: 30px;
  right: 30px;
  padding: 15px;
  font-size: 28px;
  color: #777;
  overflow-x: hidden;
}

.close:hover {
  color: #555;
}

.active {
  display: block;
  -webkit-transition: 0.3s;
  -o-transition: 0.3s;
  transition: 0.3s;
}

.sidebar__mobile {
  left: -320px;
  -webkit-transition: 2.5s;
  -o-transition: 2.5s;
  transition: 2.5s;
  z-index: 9;
}

.sidebar__close {
  display: none;
}

@media (max-width: 760px) {
  .sidebar {
    z-index: 9;
  }
  .sidebar__close {
    display: block;
    text-align: right;
    margin-right: -30px;
  }
  .close__sidebar {
    font-size: 24px;
    color: #777;
  }
  .sidebar__nav {
    width: 320px;
    padding-top: 20px;
  }
  .sub__menu {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    left: 0;
  }
  .sub__menu li {
    margin-right: 20px;
  }
  .content {
    margin: 0 auto;
  }
  .content__container {
    width: 95%;
  }
  .answer-item {
    padding: 20px 20px;
  }
  .answer__row {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: start;
    -ms-flex-pack: start;
    justify-content: flex-start;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
  }
  .answer__num {
    margin-bottom: 20px;
  }
  .user-answer {
    width: 100%;
    margin-right: 0;
  }
}