:root{
  --primary-color: #156565;
}

*{
  font-family:Verdana, Geneva, Tahoma, sans-serif;
}
.html, body{
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

nav{
  width: 100%;
  position: fixed;
}

nav .nav-items{
  padding: 20px;
  display: flex;
  justify-content: end;
  align-items: center;
}

.container{
  height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

h1{
  font-size: 2rem;
  font-weight: 100;
}

.btn {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  padding: 10px 25px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 16px;
  transition: ease 0.3s ;
}

.btn:hover{
  filter: contrast(1.3);
}