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CSS Base

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              <html>

<head>
  <meta charset="utf-8">
  <title>System fonts #2: all possible fonts</title>
</head>

<body>

  <div class="wrapper">
    <h1>This is <em>header</em></h1>
    <p>Aliquam a dictum nisi. Sed tempor, risus quis pharetra aliquet, augue elit aliquam quam, lobortis tempor ex odio eget metus. Maecenas semper orci tincidunt, commodo lectus ut, tincidunt eros. Sed consectetur, nisi et facilisis euismod, felis libero
      sollicitudin felis, eu faucibus ligula quam in lectus.</p>
    <h2>Semibold and <em>semibold italic</em></h2>
    <h3>Regular and <em>regular italic</em></h3>
    <h4>Semilight and <em>semilight italic</em></h4>
    <h5>Light and <em>light italic</em></h5>
    <h6>Black and <em>black italic</em></h6>
  </div>

</body>

</html>
            
          
!
            
              html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  width: 100%;
  min-width: 320px;
  height: 100%;
  margin: 0 auto;
  font-size: 16px;
  color: #000;
  line-height: normal;
  font-weight: normal;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  font-family: -apple-system, "San Francisco", "Helvetica Neue", Helvetica, “Lucida Grande”, Roboto, “Segoe UI”, Arial, Ubuntu, sans-serif;
}

a,
div,
header,
section,
footer,
nav,
input,
select,
button {
  box-sizing: border-box;
}

.wrapper {
  width: 100%;
  max-width: 960px;
  padding: 2em;
}

h1 {
  font-weight: 700;
}

h2,
h3,
h4,
h5,
h6 {
  font-size: 1.25em;
}

h2 {
  font-weight: 600;
}

h3 {
  font-weight: 400;
}

h4 {
  font-weight: 300;
  font-family: sans-serif-light;
}

h5 {
  font-weight: 200;
  font-family: sans-serif-light;
}

h6 {
  font-weight: 900;
}

p {
  line-height: normal;
}
            
          
!
999px
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