@import url('https://fonts.googleapis.com/css2?family=Lato&family=Share+Tech+Mono&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Lato&family=Share+Tech+Mono&display=swap');

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  display: grid;
  grid-template-columns: min-content 1fr;
  background-color: #1c2424;
  }
  
main {
  padding-bottom: 2rem;
}

header {
  grid-column: 1/3;
  padding: 4rem;
  text-align: center;
  background-image: url(https://i.pinimg.com/originals/fc/01/fc/fc01fcf41d53c4cab99e05c2dcaf848f.gif);
}

h1, h2 {
  color: white;
  text-align: center;
  font-family: 'Share Tech Mono', monospace; 
}
  
p {    
  color: white;
  /* text-align: left; */
  font-family: 'Lato', sans-serif;
  font-size: 18px;
  margin: 0, 50px, 0, 50px;
}

iframe {
  align-self: center;
}

section {
  padding: 2rem;
  margin: 0 2rem 2rem 0;
  text-align: justify;
}

table {
  font-family: 'Share Tech Mono', monospace;
  border-collapse: collapse;
  border: 1px solid black;
  width: 100%;
  font-size: 18px;
}

td, th {
  padding: 8px;
  text-align: center;
  border: 1px solid black;
}

tr {
  background-color: #3c4c5f ;
}

tr:nth-child(1) {
  background-color: #646c7c;
}

nav {
  white-space: nowrap;
  border-radius: 1px;
  background-color: #141414;
}

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

@media (min-height: 300px) {
  nav ul {
    position: sticky;
    top: 0;
  }
}

nav ul li a {
  display: block;
  padding: 1rem 1rem;
  color: white;
  text-decoration: none;
  font-family: 'Share Tech Mono', monospace; 
  font-size: 2.5rem;
  text-align: center;
}

nav a:hover{
  background-color: #646c7c;
  color: #3c4c5f  ;
  border-bottom: 3px solid #3c4c5f;
}

nav ul li a.current{
  background-color: #3c4c5f;
  color: white;
  border-bottom: 3px solid #3c4c5f;
}

.content {
  padding: 16px;
}

.sticky {
  position: fixed;
  top: 0;
  width: 100%;
}

.sticky + .content {
  padding-top: 60px;
}

iframe {
  grid-column: 1/3;
  width: 920px;
  height: 740px;
  margin: 0 auto;
  background: none transparent; 
  display:block;
  text-align: center;
}

footer {
  grid-column: 1 / 3;
  background: black;
  padding: 5rem 1rem;
  text-align: center;
  background-image: url(https://i.pinimg.com/originals/fc/01/fc/fc01fcf41d53c4cab99e05c2dcaf848f.gif);
}