@import url("https://fonts.googleapis.com/css?family=Bitter|Comfortaa|Hind+Siliguri&display=swap");
@import url("https://fonts.googleapis.com/css?family=Fjalla+One|Varela+Round&display=swap");

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}
/* header start */
header {
  /* position: absolute; */
  background-color: white;
}
header img {
  width: 100vw;
  height: 90vh;
  object-fit: cover;
}
.icon {
  position: absolute;
}
.heading {
  position: absolute;
}
.heading h1 {
  margin-top: 40vh;
  max-width: 40vw;
  margin-left: 5vw;
  font-size: 70px;
  line-height: 12vh;
  color: white;
  font-family: "Saira Semi Condensed", sans-serif;
}
.downarrow {
  width: 10vh;
  height: 10vh;
  margin-top: 70vh;
  margin-left: 50vw;
}
.section1 {
  margin-left: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.wrap {
  margin-top: 11vh;
  background-color: #222831;
  color: white;
  padding-bottom: 10vh;
}
.wrap h1 {
  margin-left: 45vw;
  margin-top: 4vh;
  font-family: "Saira Semi Condensed", sans-serif;
  font-weight: none;
  font-size: 40px;
}
.topic {
  position: relative;
  background-color: #222831;
}
.topic ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  color: white;
  opacity: 0;
  max-height: 0;
  transition: all 0.4s ease-in-out;
  font-family: "Montserrat", sans-serif;
  /* transform: translateY(-90vh); */
  font-size: 15px;
  margin-left: 32vw;
}
.topic li {
  padding: 1vh;
}
.topic button {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: white;
  padding: 2vh;
  margin-left: 30vw;
  font-family: "Montserrat", sans-serif;
}
.topic button:focus + ul {
  max-height: 92vh;
  opacity: 1;
}
.imgdrp {
  max-width: 3vh;
  max-width: 3vh;
  margin: 0.5vh 1vh;
}
.section2 {
  margin: 10vh;
}
.paper {
  display: flex;
  flex-direction: column;
  width: 50vw;
}
.paper h2 {
  margin: 2vh 5vh;
  font-family: "Saira Semi Condensed", sans-serif;
  font-size: 35px;
}
.paper p {
  margin-left: 5vh;
  font-family: "Montserrat", sans-serif;
  line-height: 5vh;
  font-size: 18px;
  margin-bottom: 5vh;
}
.paper span {
  margin-top: 4vh;
  margin-left: 6vh;
}

footer {
  margin-top: 10vh;
}
.buttons{
  margin-top: 5vh;
  margin-bottom: 10vh;
}

@media screen and (max-width: 768px) {
  .heading h1 {
    font-size: 50px;
    line-height: 8vh;
    margin-top: 30vh;
  }
  .downarrow {
    width: 10vh;
    height: 10vh;
    margin-top: 75vh;
    margin-left: 40vw;
  }
  .section1 {
    margin-left: 0;
    overflow: hidden;
  }
  .wrap {
    margin-top: 10vh;
    background-color: #222831;
    color: white;
  }
  .wrap h1 {
    margin-left: 35vw;
    margin-top: 4vh;
    font-family: "Saira Semi Condensed", sans-serif;
    font-weight: none;
    font-size: 30px;
    /* position: absolute; */
  }
  .topic {
    position: relative;
    background-color: #222831;
  }
  .topic ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    color: white;
    opacity: 0;
    max-height: 0;
    transition: all 0.4s ease-in-out;
    font-family: "Montserrat", sans-serif;
    font-size: 15px;
    margin-left: 1vh;
    margin-right: 1vh;
    position: relative;
    z-index: 0;
  }
  .topic button {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: white;
    padding: 2vh;
    margin-left: 1vh;
    margin-right: 2vh;
    text-align: start;
    font-family: "Montserrat", sans-serif;
  }
  .topic button:focus + ul {
    max-height: 200vh;
    opacity: 1;
  }
  .section2 {
    margin: 1vh;
  }
  .paper {
    display: flex;
    flex-direction: column;
    width: 80vw;
  }
  .paper h2 {
    margin: 2vh 5vh;
    font-family: "Saira Semi Condensed", sans-serif;
    font-size: 30px;
  }
  .paper p {
    margin-left: 5vh;
    font-family: "Montserrat", sans-serif;
    line-height: 4vh;
    font-size: 18px;
  }
  .paper span {
    margin-top: 4vh;
    margin-left: 6vh;
  }
  .imgdrp {
    /* display: none; */
  }

  footer {
    margin-top: 5vh;
    z-index: 2;
  }
  .buttons{
    width:70vw;
    text-align: center;
    margin-left: 10vw;
  }
  
}