html, body, div, span, iframe, h1, h2, h3, h4, h5, h6, p, a, em, img, strong, b, u, i, center, form, label, input, button {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
    box-sizing : border-box;
}
*:focus {
    outline: none;
}
html, body {
    background: #fefefe;
    height: 100%;
    font-family: Verdana, Tahoma, Helevtica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    width: 100%;
    position: relative;
    overflow: hidden;
}