@charset "utf-8";
body {
  /* width:960px; */
  margin: 0 auto;
  padding: 30px;
  background: #fCfcfc;
  color: #333;
}

main {
  display: block;
  max-width: 960px;
  width: 90%;
  margin: 0 auto;
  /* border: 1px 1px 1px 1px solid darkgray; */
  /* background-color: lightgray; */
}

footer {
  width: 100%;
}

/* section {
  padding-bottom: 50px;
} */

h1 {
  margin-bottom: 50px;
}

h1 {
  font-size: 3em;
  padding: 0.4em 0.5em;
  color: #292949;
  background: #f4f4f4;
  border-left: solid 15px #7db4e6;
  border-bottom: solid 3px #d7d7d7;
  text-align: center;
}

h2 {
  padding: 0.4em 0.5em;
  color: #292949;
  background: #f4f4f4;
  border-left: solid 10px #7db4e6;
  border-bottom: solid 3px #d7d7d7;
  display: flex;
  justify-content: center;
  align-items: center;
}

h2::before, h2::after {
  content: '';
  width: 100px;
  height: 1px;
  background-color: #99e;
}

h2::before {
  margin-right: 20px;
}

h2::after {
  margin-left: 20px;
}

h3 {
  padding: 0.4em 0.5em;
  color: #292949;
  background: #f4f4f4;
  border-left: solid 5px #7db4e6;
  border-bottom: solid 3px #d7d7d7;
}

h2, h3 {
  margin-bottom: 30px;
}

footer {
  text-align: center;
}

ol, ul {
  margin-left: 50px;
}

dl {
  margin: 0 0 1.5em 30px;
}

dt {
  float: left;
  padding-bottom: 0.7em;
}

dd {
  padding-bottom: 0.7em;
  margin-left: 120px;
}

p {
  line-height: 2em;
  padding-bottom: .7em;
  margin: 0 0 1em;
}

li {
  padding-bottom: 0.7em;
}

pre {
  overflow-x: auto;
  border-radius: 10px;
  margin: 20px;
  padding: 20px;
  background-color: #0f0f2F;
}