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

html {
    height: 100%;
}

body {
    min-height: 100%;
    line-height: 1;
    font-family: sans-serif;
}

​h1, h2, h3, h4, h5, h6 {
    font-size: 100%;
}

​input, select, option, optgroup, textarea, button, pre, code {
    font-size: 100%;
    font-family: inherit;
}

​ol, ul {
    list-style: none;
}