body {
    padding: 1rem;
}

* {
    background-color: aliceblue;
}

h1, h2, h3, h4, h5, h6 { font-family: sans-serif; }
html { 
    box-sizing: border-box; 
    max-width: 100ch;
    margin:auto;
    line-height: 1.4; 
    font-family: serif;
    font-size: 1.25em;
    color: #333;
}
a:link { text-decoration: none; }
a:hover { text-decoration: underline; }
*, *:before, *:after { box-sizing: inherit; }