html, body, ul, li, h1, h2, h3, h4, span, div, p, a, form, input {
    margin: 0;
    padding: 0;
    font-family: helvetica;
}

html, body {
    height: 100%;
    overflow: hidden;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    display: block
}

a, input, button {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-appearance: none;
    outline: none;
    border: none;
}

img {
    display: block
}