body, h1, h2, h3, h4, h5, h6, hr, p, blockquote,
dl, dt, dd, ul, ol, li,
pre,
form, fieldset, legend, button, input, textarea,
th, td
{
    margin: 0;
    padding: 0;
}
body, button, input, select, textarea
    /* for ie */
{
    font: 14px/1.5 tahoma, \5b8b\4f53, sans-serif;
}
h1, h2, h3, h4, h5, h6 {
    font-size: 100%;
    font-weight: normal;
}
address, cite, dfn, em, var {
    font-style: normal;
}
code, kbd, pre, samp {
    font-family: courier new, courier, monospace;
}
small {
    font-size: 12px;
}

ul, ol {
    list-style: none;
}
a {
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
sup {
    vertical-align: text-top;
}
sub {
    vertical-align: text-bottom;
}
legend {
    color: #000;
}
/* for ie6 */
fieldset, img {
    border: 0;
}
button, input, select, textarea {
    font-size: 100%;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section, summary, time, mark, audio, video {
    display: block;
    margin: 0;
    padding: 0;
}
mark {
    background: #ff0;
}
:-moz-placeholder {
    color: #ddd;
    opacity: 1;
}
::-moz-placeholder {
    color: #ddd;
    opacity: 1;
}
input:-ms-input-placeholder {
    color: #ddd;
    opacity: 1;
}
input::-webkit-input-placeholder {
    color: #ddd;
    opacity: 1;
}
body {
    background: linear-gradient(#000000 49%, #000000 50%, #1b1b1b 51%, #1b1b1b 100%) no-repeat;
    min-height: 100vh;
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
}
img {
    width: 100%;
    height: auto;
}