html,
body,
div,
span,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
img,
b,
i,
dl,
dt,
dd,
ol,
ul,
li,
form,
label,
table,
tbody,
tfoot,
thead,
tr,
th,
td,
input,
select,
button,
a {
    list-style: none;
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    border-collapse: collapse;
    border-spacing: 0;
}