* {
  box-sizing: border-box;
}

body {
  padding: 0;

  margin: 0;

  overflow-x: hidden;

  font-family: "Cabin", sans-serif;

  font-size: 17px;
}

#navbar {
  z-index: 3;

  position: fixed;

  top: -50px;

  width: 100%;

  transition: top 0.2s;

  background-color: rgb(255, 255, 255);

  color: rgb(136, 176, 75);

  box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.75);

  -webkit-user-select: none;

  -moz-user-select: none;

  -ms-user-select: none;

  user-select: none;
}

nav ul {
  list-style-type: none;

  margin: 0;

  padding: 0;

  overflow: hidden;
}

nav ul li {
  float: left;
}

nav ul li span {
  display: block;

  color: inherit;

  text-transform: uppercase;

  padding: 15px;

  text-decoration: none;

  font-family: "Cabin", sans-serif;

  cursor: pointer;

  transition: background-color 0.1s;
}

nav ul li span a {
  color: inherit;
  text-decoration: none;
}

#navbar ul li span:hover {
  background-color: rgb(136, 176, 75);

  color: white;
}

.dropdown-icon {
  display: none;
}

section {
  min-width: 100vw;

  min-height: 100vh;
}

#home {
  display: flex;

  align-items: center;

  color: white;

  height: 100vh;
}

.video-wrap {
  position: absolute;

  top: 0;

  left: 0;

  width: 100%;

  height: 100vh;

  overflow: hidden;
}

.video-wrap video {
  min-width: 100%;

  min-height: 100%;

  filter: grayscale(100%);
}

.header-overlay {
  height: 100vh;

  width: 100vw;

  position: absolute;

  top: 0;

  left: 0;

  background-color: rgb(136, 176, 75);

  z-index: 1;

  opacity: 0.6;
}

.header-content {
  height: 100vh;

  width: 100vw;

  position: absolute;

  top: 0;

  left: 0;

  display: flex;

  align-items: center;

  justify-content: center;

  flex-wrap: wrap;

  z-index: 2;
}

.title {
  font-size: 36px;
}

.title span {
  font-size: 16px;
}

.container {
  min-height: 100vh;

  display: flex;
}

#about .description-photo {
  width: 40%;

  background-image: url("./images/dziewonski.jpg");

  background-repeat: no-repeat;

  background-size: cover;

  background-position: 50% 0%;

  display: flex;

  align-items: flex-end;

  justify-content: flex-end;
}

#about .description-photo div {
  padding-right: 30px;

  color: white;
}

#about .description {
  width: 60%;

  padding: 50px;
}

.description h1 {
  font-size: 40px;
}

.description h1::after {
  content: "";

  display: block;

  height: 3px;

  background-color: rgb(136, 176, 75);

  width: 70%;
}

#help {
  width: 100%;
}

#help .help-background {
  background-image: url("./images/architectural-design-architecture-blueprint-239886.jpg");

  background-size: cover;

  background-attachment: fixed;

  background-position: 50% 50%;

  height: 40vh;

  width: 100%;

  display: flex;

  justify-content: center;

  align-items: center;
}

#help .help-background span {
  background-color: rgb(43, 41, 41);

  color: white;

  font-size: 40px;

  padding: 30px;

  font-weight: bold;

  text-align: center;
}

section .description {
  width: 60%;

  padding: 50px;

  text-align: center;

  margin: auto;
}

.description a {
  color: white;

  text-decoration: none;

  font-size: 20px;
}

#documents {
  min-height: 60vh;
}

#documents .documents-background {
  background-image: url("./images/blur-blurry-book-159510.jpg");

  background-size: cover;

  background-attachment: fixed;

  background-position: 50% 50%;

  height: 30vh;

  width: 100%;

  display: flex;

  justify-content: center;

  align-items: center;
}

#documents .documents-background span {
  background-color: rgb(136, 176, 75);

  color: white;

  font-size: 40px;

  padding: 30px;

  font-weight: bold;

  text-align: center;
}

#documents .download {
  color: black;
}

#contact {
  width: 100%;

  background-color: rgb(136, 176, 75);

  display: flex;

  justify-content: center;

  align-items: center;
}

#contact .description {
  padding: 20px;

  text-align: center;

  color: white;

  font-style: normal;
}

#contact .description h2 {
  margin-bottom: 0px;

  margin-top: 0px;
}

@media screen and (max-width: 768px) {
  ul.topnav li:not(:nth-child(1)) {
    display: none;
  }

  ul.topnav li.dropdown-icon {
    display: block;

    float: right;

    font-size: 14px;
  }

  ul.topnav.responsive li.dropdown-icon {
    position: absolute;

    top: 0;

    right: 0;

    font-size: 14px;
  }

  ul.topnav.responsive {
    position: relative;

    background-color: white;

    color: rgb(136, 176, 75);

    box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.75);
  }

  ul.topnav.responsive li {
    display: inline;

    float: none;
  }

  .header-content {
    flex-direction: column-reverse;
  }

  .header-content .title {
    padding-bottom: 50px;

    text-align: center;
  }

  .title {
    font-size: 25px;
  }

  .container {
    height: auto;

    display: flex;

    flex-direction: column-reverse;
  }

  #about .description-photo {
    padding-top: 0;

    width: 100%;

    height: 250px;

    background-position: 50% 15%;
  }

  #about .description {
    width: 100%;

    padding: 50px;
  }

  #help .help-background {
    height: 25vh;
  }

  #help .help-background span {
    font-size: 25px;

    padding: 5px;
  }

  #help .description {
    width: 100%;
  }
}