* {
    font-family: sans-serif;
    line-height: 1.5;
    font-size: 14px;
    letter-spacing: 0.5px;
}
@media all {
    body {
        max-width: 800px;
        padding: 0px 100px;
        margin: 0px auto;
    }
}
@media (max-width: 900px) {
    body {
        padding: 0px 30px;
    }
}
main {
    margin-bottom: 50px;
}
header {
    margin-top: 80px;
    margin-bottom: 50px;
}
header h1 {
    font-size: 24px;
    text-align: center;
}
ol {
    list-style: lower-alpha;
}
ol.numeric {
    list-style: decimal;
}
hr {
    margin-top: 30px;
    margin-bottom: 30px;
    border: none;
    border-top: 1px solid #000;
}

h2 {
    font-size: 18px;
}
h3 {
    font-weight: bold;
    font-size: 14px;
}

h4 {
    text-decoration: underline;
    font-weight: normal;
    font-size: 14px;
}

ul {
    list-style: "–  ";
}

a:visited, a:link, a:hover, a:active {
    color: blue;
    text-decoration: underline;
}