style.css

* {
  box-sizing: border-box;
}

html {
  font-family: "Roboto", sans-serif;

  min-height: 100%;
  background: linear-gradient(
      0deg,
      rgba(66, 132, 33, 0.8),
      rgba(200, 255, 163, 0.95)
    ),
    url(images/background.jpg);
  background-repeat: no-repeat;
  background-size: cover;
}

html,
body {
  margin: 0;
}

header {
  text-align: center;
  padding: 4rem 2.5rem;
}

#logo {
  width: 100%;
  max-width: 550px;
  height: auto;
}

main {
  max-width: 36em;
  margin: auto;
  padding: 0 1.5rem;
}

h1 {
  font-size: 3em;
  font-weight: normal;
}

p {
  font-size: 1.5em;
  line-height: 1.2;
}

#loading-bar {
  width: 100%;
  border: 1px solid black;
  background-color: #e7f2e5;
  text-align: center;
}

#loading-bar span {
  color: beige;
  mix-blend-mode: difference;
}

ul {
  list-style-type: none;
  padding: 0;

  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

ul li a {
  display: inline-block;
  padding: 1em;
}

#contact {
  text-align: center;
}

#contact a,
#contact:visited {
  color: blue;
  text-decoration: none;
}

footer {
  color: white;

  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
}

footer div {
  margin: 1rem;
}

footer a {
  display: block;
}

footer img {
  display: block;
  max-width: 100%;
  height: auto;
}