* {
  margin: 0
  padding: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  background-color: #ddd;
}

body {
  color: #444;
  font-family: sans-serif;
  border-top: 4px solid #444;
  padding: 0px 20px;
}

header {
  background-color: #ddd;
  padding: 15px;
  padding-top: 5px;
}

.header-pretext {
  margin: 0;
  font-size: clamp(8px, 1.5vw, 12px);
}

.img-logo {
  width: clamp(200px, 30vw, 400px);
  margin: auto;
  display: block;
}

.main-nav {
  background-color: #fff;
  /* text-align: center;
  padding-top: 55px; */
  border-top: 4px solid #010168;
  border-bottom: 4px solid #010168;
  /* margin-top: 44px; */
}

ul {
  display: flex;
  list-style: none;
  justify-content: center;
  align-items: center;
  margin: 0;
  padding: 0;
}

li:last-child a {
  border-right: none;
}

a {
  text-transform: uppercase;
  /* font-size: 18px; */
  font-size: clamp(2px, 2.5vw, 20px);
  display: inline-block;
  padding-right: clamp(1px, 4vw, 40px);
  padding-left: clamp(1px, 4vw, 40px);
  padding-top: clamp(0.75px, 1.5vw, 15px);
  padding-bottom: clamp(0.5px, 1vw, 10px);

  /* padding: 2vw 6vw; */
  border-right: 2px solid #7e7e7e;
  transition: 0.3s all ease;
}

a:hover {
  background-color: #444;
  color: #fff;
}

/* nav a:link {
  margin-right: 30px;
  margin-top: 5px;
  display: inline-block;
}
nav a:link:last-child {
  margin-right: 0;
} */

h1 {
  text-align: center;
  margin-top: 25px;
  margin-bottom: 15px;
}
h2 {
  margin-top: 20px;
  font-size: clamp(19px, 3vw, 26px);
}
.img-introduction {
  display: block;
  margin: 20px auto;
  width: 50%;
  height: auto;
}
.intro-text {
  margin-top: 10px;
  margin-right: 4vw;
  margin-left: 4vw;
}