html {
  scroll-behavior: smooth;
  scroll-padding-top: 75px;
}

body {
  background-image: url("../img/DOFA\ Peradeniya.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  -webkit-animation-name: ScreenFade;
  -webkit-animation-duration: 3s;
  animation-name: ScreenFade;
  animation-duration: 3s;
}

@-webkit-keyframes ScreenFade {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes ScreenFade {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.nav-scroll {
  position: relative;
  top: 0px;
  transition: 1s;
  animation-name: nav-scroll;
  animation-duration: 1s;
  -webkit-animation-name: nav-scroll;
  -webkit-animation-duration: 1s;
}

/* Affix Animation */

@keyframes nav-scroll {
  from {
    height: 120px;
  }

  to {
    height: 100px;
  }
}

@-webkit-keyframes nav-scroll {
  from {
    height: 120px;
  }

  to {
    height: 100px;
  }
}

.nav-bar {
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  box-shadow: 0px 15px 18px rgb(0 0 0 / 30%);
  height: 100px;
  white-space: nowrap;
  position: fixed;
  z-index: 2;
  width: 100%;
}

.nav-items {
  float: right;
  text-align: right;
  list-style-type: none;
  display: flex;
}

.nav-link {
  padding: 15px;
  text-transform: uppercase;
  text-decoration: none;
  position: relative;
  top: 22px;
  right: 30px;
  color: black;
  font-weight: 1;
  border: none;
  border-radius: 6px;
}

.nav-link:hover {
  color: rgb(0, 102, 255);
  background-color: rgb(226, 226, 226);
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.295);
  border-radius: 5px;
  padding: 15px;
}

.nav-img {
  border-radius: 10px;
  position: relative;
  top: 15px;
  left: 30px;
}

.nav-label {
  position: relative;
  left: 45px;
  font-size: 20px;
  top: 5px;
  color: black;
  cursor: pointer;
}

.nav-label:hover {
  color: rgb(70, 70, 70);
  cursor: pointer;
}

.mini-label {
  position: relative;
  right: 170px;
  top: 31px;
  font-size: 15px;
  font-weight: 1;
  color: black;
}

.mini-label:hover {
  color: rgb(88, 88, 88);
  cursor: pointer;
}

.dropbtn {
  background-color: transparent;
  color: black;
}

.dropdown {
  position: relative;
  display: inline-block;
  width: 100%;
  text-transform: uppercase;
  z-index: 2;
}

.dropdown-content {
  background-color: rgb(255, 255, 255);
  display: none;
  position: absolute;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
  min-width: 9.5rem;
  padding: 6px;
  border-radius: 3px;
  top: 76px;
  right: -30px;
}

.drop-link {
  color: #212529;
  text-align: center;
  text-decoration: none;
  display: block;
  border-radius: 0.25rem;
  padding: 6px 10px;
  font-size: 13px;
  height: 35px;
  background-color: rgb(245, 245, 245);
}

.drop-link:hover {
  background-color: rgb(226, 226, 226);
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.295);
  border-radius: 0.25rem;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown:hover .dropbtn {
  background-color: #dedede;
}

.dropdown-content {
  width: 100%;
}

.pre-nav {
  background-color: rgb(206, 206, 206);
  height: 50px;;
}

.pre-nav-icons {
  padding: 20px;
  position: relative;
  top: 8px;
  left: 10px;
  color: #222527;
  font-size: 15px;
  text-decoration: none;
}

.pre-nav-icons:hover {
  color: blue;
  cursor: pointer;
}

.nav-social-media {
  position: relative;
  right: 30px;
  top: 17px;
  float: right;
  margin-right: 30px;
  color: black;
}

.nav-social-media:hover {
  color: blue;
  cursor: pointer;
}

.main-title h1 {
  position: relative;
  left: 60px;
  top: 180px;
  font-size: 60px;
  width: 1000px;
  text-shadow: 0 0 5px black;
  font-weight: 400;
}

.main-title h3 {
  position: relative;
  left: 65px;
  top: 190px;
  font-size: 30px;
  width: 1000px;
  color: white;
  text-shadow: 0 0 10px black;
  font-weight: 400;
}

.intro-btn {
  text-decoration: none;
  text-transform: uppercase;
  position: relative;
  top: 270px;
  left: 65px;
  padding: 15px;
  border-radius: 6px;
  color: white;
  font-weight: 400;
  background-color: #cc0000;
}

.intro-btn:hover {
  box-shadow: 0 0 20px #cc0000;
  color: rgb(241, 241, 241);
}

#intro {
  position: relative;
  top: 500px;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(15px);
  padding: 50px;
  padding-top: 60px;
  scroll-margin-top: -10px;
  box-shadow: 0 0 100px black;
}

#intro h3 {
  position: relative;
  bottom: 20px;
  font-size: 30px;
}

.footer {
  position: relative;
  top: 500px;
  background-color: rgb(182, 182, 182);
  padding: 40px;
  box-shadow: 0 1px 10px rgba(0, 0, 0, 0.541);
}

.footer a {
  color: black;
  text-decoration: none;
}

.footer a:hover {
  color: blue;
}

.copyright {
  position: relative;
  left: 30px;
  width: 500px;
}

.footer-social-media {
  float: right;
  padding: 20px;
  position: relative;
  bottom: 35px;
  right: 20px;
}

.footer-social-media:hover {
  color: blue;
  cursor: pointer;
}

#backToTop {
  display: inline-block;
  background-color: #b4b4b4;
  width: 40px;
  height: 40px;
  text-align: center;
  border-radius: 4px;
  position: fixed;
  bottom: 25px;
  right: 5px;
  transition: 0.3s;
  opacity: 0.5s;
  visibility: 0.5s;
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
  text-decoration: none;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

#backToTop::after {
  content: "\f077";
  font-family: FontAwesome;
  font-weight: normal;
  font-style: normal;
  font-size: 1.5em;
  line-height: 40px;
  color: #4d4d4d;
}

#backToTop:hover {
  cursor: pointer;
  background-color: rgb(158, 158, 158);
}

#backToTop:active {
  background-color: rgb(97, 97, 97);
}

#backToTop.show {
  opacity: 1;
  visibility: visible;
}