*{
 margin : 0;
 padding: 0;
 box-sizing: border-box;
}


body {
    margin: 20px;
}

h1 {
    margin-top: 20px;
    margin-left: 20px;
}

p {
    margin-left: 20px;
}

ul {
    margin: 20px;
    line-height: 15pt;
}

li {
    margin-left: 50px;
    margin-bottom: 15px;
}

img {
    max-width: 100px;
    display: block;
}

a:visited {
    color: blue;
}

mark {
    background-color: gold;
}

footer {
    max-width: 500px;
    font-size: 9pt;
    margin-bottom: 0;
    margin-left: 20px;
    margin-top: 10px;
    border-top: 1px solid black;
    padding-top: 10px;
}