html {
    box-sizing: border-box;
}

div,
p,
ul,
section,
dl {
    box-sizing: border-box;
}

body {
    margin: 0;
}

ul,
ul li {
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-size: 1em;
    font-weight: normal;
}