html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
body{
  background-color: black;
}
.back{
  width: 100%;
  height: 100%;
  position: absolute;
  background: url("/image/back.jpg");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}
.center{
  width: 100%;
  position: absolute;
  top: 55%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.size{
  margin: 0px auto;
  width: 880px;
  position: relative;
  max-width: 100%;
  padding-bottom: 20px;
}


.imgg{
  display: block;
  width: 100%;
}

.fixed{
  position: fixed;
  right: 3%;
  bottom: 3%;
  z-index: 10;
}
.fixed a img{
  width: 100px;
}

@media ( max-width: 400px ){
.back{
  height: 100%;
}
}

@media ( max-width: 481px ) {
  .size {
    width: 100%;
  }
  img {
    width: 100%;
  }
  .fixed a img{
    width: 50px;
  }
}