*, 
*::before,
*::after {
	box-sizing: inherit;
}

html {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: #222D30;
  color: #ffffff;
  font-family: sans-serif;
}

h1 {
  font-family: 'Oswald', sans-serif;
  font-size: 4rem;
  text-align: center;
  margin: 0;
}

h2 {
  font-size: 2rem;
  text-align: center;
}

p {
  font-family: 'Droid Serif', serif;
  font-size: 1.2rem;
  line-height: 2.5rem;
  font-style: italic;
  margin: 60px 0;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

a {
  text-decoration: none;
  color: #ccc;
}

header {
  width: 100%;
  height: calc(100vh - 80px);
  padding: 20%;
}

.mainNav {
  width: 100%;
  height: 80px;
  background-color: #090C0D;
  line-height: 80px;
  text-align: center;
}

.mainNav__list li {
  display: inline-block;
}

.mainNav__list a {
  padding: 0 40px;
  display: block;
}

.mainNav__list a:hover {
  background-color: #263940; 
}

.section {
  max-width: 60%;
  margin: 0 auto 8rem;
}

.section__header {
  font-family: 'Oswald', sans-serif;
  font-size: 3rem;
  text-align: left;
  margin: 2rem 0;
}

.stickyNav .mainNav {
    position: fixed;
    top: 0;
    left: 0;
    height: 60px;
    line-height: 60px;  
}

.btn-top {
  display: none;
  width: 40px;
  height: 40px;
  position: fixed;
  bottom: 30px;
  left: 30px;
  border: 2px solid #888;
  border-radius: 50%;
  background: #000;
  color: #fff;
  text-align: center;
  z-index: 100;
  cursor: pointer;
  font-size: 1.7rem;
  padding-bottom: 5px;
  box-shadow: 0 0 1rem rgba(0,0,0,0.5);
}