stylesheet.css

:root {
  --dark-color: rgba(0,0,0,0.9);
  --theme-color: rgba(0,0,0,0.8);
  --light-color: rgba(0,0,0,0.1);
  --mid-color: rgba(0,0,0,0.6);
}
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: Sans-serif;
  font-size: 14px;
  margin: 0;
  color: black;
}
.container {
  padding: 0;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}
nav {
  padding: 10px 0;
  text-align: right;
}
nav a {
  display: inline-block;
  padding: 10px;
  opacity: 0.8;
}
.logo {
  height: 80px;
  display: inline-block;
}
header {
  padding: 30px 10px 20px;
  box-sizing: border-box;
  text-align: center;
}
header h1 {
  font-size: 40px;
  letter-spacing: -2px;
  margin: 5px;
  text-align: center;
}
header h1 a {
  display: block;
/*
  display: flex;
  align-items: center;
  */
  font-family: 'Wix Madefor Display', sans-serif;
}
header small {
  font-size: 15px;
  margin: 10px 5px;
  /*
  letter-spacing: 1px;
  */
  display: block;
  /*
  text-align: center;
  */
  padding: 0 0 15px;
  color: rgba(0,0,0,0.8);
}
a {
  text-decoration: none;
  color: black;
}
.card {
  background: rgba(0,0,0,0.1);
  padding: 10px 30px;
  margin-bottom: 20px;
  box-sizing: border-box;
}
.explanation {
  padding: 20px 10px;
  box-sizing: border-box;
}
.videoWrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  margin-top: 10px;
}
.videoWrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
a.dark {
  border: 2px solid royalblue;
  display: inline-block;
  padding: 5px 10px;
  border-radius: 10px;
  font-size: 14px;
  /*
  font-family: "Helvetica Neue", helvetica, arial, "sans serif";
  */
  font-family: 'Wix Madefor Display', sans-serif;
  margin: 5px;
  font-weight: 600;
  background: royalblue;
  color: white;
}
a.dark.inverse {
  color: royalblue;
  background: white;
}
a.bright {
  color: yellow;
}
.btn {
  padding: 5px 10px;
  display: inline-block;
  text-decoration: none;
  font-size: 12px;
  background: royalblue;
  color: white;
  border-radius: 2px;
  /*
  background: rgba(0,0,0,0.7);
  color: white;
  */
}
.row {
  text-transform: lowercase;
  display: flex;
  color: var(--mid-color);
  max-width: 800px;
  margin: 0 auto;
}
.row .col {
  width: 33%;
  padding: 10px;
  box-sizing: border-box;
}
.row h2 {
  margin: 0 0 5px 0;
  text-transform: lowercase;
}
.row.verydisabled {
  opacity: 0.05;
}
.row.disabled {
  opacity: 0.2;
}
strong {
/*
  text-transform: uppercase;
  display: block;
  */
  color: gold;
}
.table {
  table-layout: fixed;
  width: 100%;
  margin-top: 20px;
  margin-bottom: 100px;
}
.table td, .table th {
  background: rgba(0,0,0,0.1);
  padding: 10px;
  font-size: 14px;
  word-wrap: break-word;
}
.well {
  padding: 20px;
  margin-top: 20px;
  background: rgba(0,0,0,0.1);
}
.line {
  margin: 10px 0;
}
.rotate {
  animation: rotation 6s infinite linear;
}
.beat {
  animation: beat 3s infinite linear;
}
footer {
  margin-top: 100px;
  background: var(--dark-color);
  text-align: center;
  padding: 50px;
  box-sizing: border-box;
}
footer .btn {
  padding: 5px 10px;
  display: inline-block;
  text-decoration: none;
  font-size: 12px;
  background: none;
  color: white;
}
.info {
  display: block;
  background: gold;
  padding: 20px;
  margin: 20px 0;
}