/* 默认样式  */
body,
blockquote,
button,
div,
dd,
dl,
dt,
form,
fieldset,
h1,
h2,
h3,
h4,
h5,
h6,
ul,
li,
input,
ol,
p,
pre,
table,
td,
textarea,
th,
tr,
img,
nav,
figure,
address,
hgroup,
header,
footer,
article,
section,
aside,
menu,
details,
figcaption,
legend,
summary {
  margin: 0;
  padding: 0;
  line-height: 1;
  outline: 0;
  border: 0;
}
html,
body {
  font-family: "microsoft yahei", 'Helvetica Neue', Helvetica, sans-serif;
}
ol,
ul,
dl {
  list-style: none;
}
button {
  background-color: transparent;
}
a {
  text-decoration: none;
  color: inherit;
}
#app {
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
  min-width: 1180px;
}
header {
  height: 547px;
  position: relative;
}
header img {
  position: absolute;
  left: 50%;
  width: 1920px;
  height: 670px;
  margin-left: -960px;
}
main {
  margin-top: -182px;
  position: relative;
}
footer {
  height: 160px;
  background-color: skyblue;
  vertical-align: middle;
  box-sizing: border-box;
  padding-top: 38px;
  background: url('../img/bottom-bg.png') no-repeat;
  background-size: 100% 100%;
}
footer div {
  width: 600px;
  height: 84px;
  margin: auto;
  text-align: center;
  font-size: 14px;
}
footer div p {
  line-height: 28px;
  color: #fff;
}
.floating {
  position: fixed;
  right: 20px;
  top: 40%;
}
.floating .donation {
  width: 132px;
  height: 39px;
  background: url('../img/donation.png') no-repeat;
  background-size: 100% 100%;
  font-size: 15px;
  color: #fff;
  font-weight: bold;
  line-height: 39px;
  text-align: right;
  padding-right: 16px;
  box-sizing: border-box;
  display: block;
}
.floating .qr {
  margin-top: 18px;
  width: 130px;
  height: 130px;
  border: 1px solid #E3E3E3;
  box-sizing: border-box;
  padding: 7px;
}
.floating p {
  margin-top: 14px;
  font-size: 14px;
  color: #333;
  font-weight: bold;
  text-align: center;
}