body,
html {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  overflow-x: hidden;
  min-width: 100vw;
  background-color: #ffffff;
  color: black;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

a {
  outline: none;
  text-decoration: none;
  color: inherit;
}

.header {
  padding: 0.5rem 2rem;
  background-color: #856ef7;
  color: white;
  text-align: center;
}

.navbar {
  background-color: white;
  color: black;
  padding: 1rem 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.navbar-right {
  font-weight: bold;
  margin-right: auto;
}

.about {
  background-color: #e6e2fe;
  display: flex;
  flex-direction: column;
  padding: 1rem 2rem 3rem 2rem;
  justify-content: start;
  align-items: start;
  min-height: 8rem;
}

.main {
  margin-top: 4rem;
  margin-bottom: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  padding-inline: 1rem;
}

.info {
  background-color: white;
  border-radius: 5px;
  color: black;
  max-width: max(50%, 20rem);
  box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px;
  /* border: 2px solid #58009a; */
  border: 2px solid rgba(94, 94, 94, 0.167);
  display: flex;
  padding: 1rem 1.5rem;
  gap: 1.5rem;
  align-items: center;
}

.info-right > * {
  font-size: 2rem;
}

.info-left > h3 {
  margin-top: 0rem;
  margin-bottom: 0rem;
}

.item-border {
  border: 2px solid #58009a;
}

.article {
  background-color: #f5f5fc;
  padding: 2rem 2rem;
  text-align: center;
}

.article > div > h2 {
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.display-none {
  display: none;
}

.article-3-content {
  display: flex;
  flex-direction: column;
  align-items: start;
  background-color: #ffffff;
  box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px;
  border-radius: 5px;
  padding-inline: 1.5rem;
  margin-bottom: 2rem;
  height: 4rem;
  position: relative;
}

:root {
  --background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 1) 100%
  );
}

.article-3-content::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 50%;
  bottom: 0;
  background: var(--background);
  /* background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 1) 100%); */
  pointer-events: none;
}

.article-1-content {
  display: flex;
  flex-direction: column;
  align-items: start;
  background-color: #ffffff;
  box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px;
  border-radius: 5px;
  padding-inline: 1.5rem;
  margin-bottom: 2rem;
  height: 4rem;
  position: relative;
  text-align: start;
  overflow-x: auto;
  overflow-y: hidden
}

.article-1-content:nth-child(2) {
  padding-bottom: 1.5rem;
}

.article-1-content::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 50%;
  bottom: 0;
  pointer-events: none;
}

.title-icon {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: baseline;
}

.grammar-rules {
  display: flex;
  flex-direction: column;
  align-items: start;
  text-align: left;
  gap: 0.5rem;
  overflow-y: hidden;
}

.grammar-rules > ol > li {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid rgba(94, 94, 94, 0.167);
}

.grammar-rules > ol > li:last-child {
  border-bottom: none;
}

.tables {
  display: flex;
  flex-direction: column;
  align-items: start;
  text-align: left;
  overflow-y: hidden;
  border-collapse: collapse;
  margin:25px 0;
  font-size: 0.9em;
  min-width: 200px;
  border-radius: 0.8rem;
  overflow: hidden;
}

.tables thead tr {
  background-color: #856ef7;
  color: #ffffff;
  text-align: left;
  font-weight: bold;
}

.tables th,
.tables td {
  padding: 12px 15px;
  min-width: 200px;
}

.tables tbody tr {
  border-bottom: 1px solid #dddddd;
}

.tables tbody tr:nth-of-type(even) {
  background-color: #f3f3f3;
}

.past-paper {
  display: flex;
  flex-direction: column;
  align-items: start;
  text-align: left;
  gap: 0.5rem;
  overflow-y: hidden;
}

.past-paper > span {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid rgba(94, 94, 94, 0.167);
}

.past-paper > span:last-child {
  border-bottom: none;
}

.visible {
  display: block;
}

.hidden {
  display: none;
}

.hidden::before {
  display: none;
}

.hidden::after {
  display: none;
}

.article-2-container {
  text-align: start;
}

.text-types {
  background-color: white;
  box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px;
  border-radius: 5px;
  padding: 1rem;
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
}

.text-types > h3 {
  margin: 0 0 0.5rem 0;
  text-align: center;
}

.btn {
  margin-top: 1rem;
  padding: 0.6rem 2rem;
  border-radius: 5px;
  border: none;
  font-size: 0.9rem;
}

.btn-arrow {
  margin-left: 0.5rem;
}

.btn-1 {
  background-color: #fdcffd;
  color: #f20cf2;
}

.btn-2 {
  background-color: #d6cffd;
  color: #5c3df5;
}

.btn-3 {
  background-color: #fdd7ce;
  color: #f2330d;
}

.text-types-content {
  margin-top: 1rem;
}

.ITK-article {
  height: auto;
}

.informal-letter {
  width: 100%;
}

.video {
  width: 100%;
}