* {
  scroll-behavior: smooth;
}

body {
  background-image: linear-gradient(rgba(15, 15, 15, 0.5), rgba(15, 15, 15, 0.9)), url("img/4K2.webp");
  height: 100vh;
  color: white;
  font-family: Helvetica;
  margin: 0;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}

header {
  width: 100%;
  height: 75px;
  background: linear-gradient(90deg, rgb(133, 0, 27), rgb(220, 20, 60));
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: fixed;
  top: 0;
}

#logo {
  width: 200px;
  aspect-ratio: 25 / 10 auto;
  padding: 8px 5px 5px 7px;
}

h1 {
  color: white;
  font-size: min(7vw, 2.0em);
  text-align: center;
}

.certification > p {
  margin: 30px 20px;
  font-size: 1.2em;
}

.standard > p {
  margin: 30px 20px;
  font-size: 1.2em;
}

.Other > p {
  margin: 30px 20px;
  font-size: 1.2em;
}

.Peter > p {
  margin: 30px 20px;
  font-size: 1.2em;
}

header h1 {
  text-align: center;
  margin: auto;
  display: block;
}

hr {
  height: 2px;
  background-color: white;
  border-color: white;
  width: 50vw;
  max-width: 530px;
  margin: -17px auto 0 auto;
}

.Fuchsia {
  color: fuchsia;
}

.Crimson {
  color: crimson;
}

.Aqua {
  color: aqua;
}

.Lime {
  color: lime;
}

.navigation {
  width: 50%;
  max-width: 800px;
  min-width: 700px;
  height: 75px;
  margin: 0 20px 0 auto;
}

.navigation > ul {
  display: flex;
  justify-content: space-evenly;
  gap: 30px;
  align-items: center;
  padding-inline-start: 0;
}

.navigation > ul > li {
  color: #dfdfe2;
  margin: 0 0.2rem;
  padding: 0.2rem;
  display: block;
  cursor: crossahair;
}

li > a {
  color: inherit;
  text-decoration: none;
}

.certification a {
  color: fuchsia;
}

.certification a:visited {
  color: fuchsia;
}

.certification a:hover {
  color: aqua;
}

.certification a:active {
  color: crimson;
}

.standard a {
  color: crimson;
}

.standard a:visited {
  color: crimson;
}

.standard a:hover {
  color: aqua;
}

.standard a:active {
  color: fuchsia;
}

.Other a {
  color: aqua;
}

.Other a:visited {
  color: aqua;
}

.Other a:hover {
  color: crimson;
}

.Other a:active {
  color: fuchsia;
}

.Peter a {
  color: Lime;
}

.Peter a:visited {
  color: Lime;
}

.Peter a:hover {
  color: fuchsia;
}

.Peter a:active {
  color: white;
}

main {
  padding-top: 90px
}

section {
  width: 55vw;
  margin: 2rem auto 6rem auto;
  max-width: 700px;
  min-width: 300px;
  border-radius: 20px;
  padding: 0.2rem 1rem;
  background-color: rgba(0,0,0,0.35);
}

h1,
h2 {
  font-family: Calibri, Helvetica, Tahoma;
}

h3 {
  margin-top: 5px;
  padding-left: 0px;
  font-size: 1.375rem;
}

.links {
  list-style: none;
}

#current-page {
  background-color: rgba(0,0,0,0.15);
  margin: -7px 0 0 0;
  padding: 20px 10px;
  border-radius: 10px;
  display: block;
}

#not-current-page {
  background-color: rgba(0,0,0,0);
  margin: -7px 0 0 0;
  padding: 20px 10px;
  display: block;
}

#not-current-page:hover {
  background-color: rgba(0,0,0,0.15);
  color: gold;
  border-radius: 10px;
}

#current-page:hover {
  background-color: rgba(255,255,255,0.15);
  color: gold;
}