/* CSS Document */
* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box
}
html, input, select, textarea {
  font-size: 16pt;
}
@media screen and (max-width: 1680px) {
  html, input, select, textarea {
    font-size: 13pt;
  }
}
@media screen and (max-width: 1280px) {
  html, input, select, textarea {
    font-size: 12pt;
  }
}
@media screen and (max-width: 736px) {
  html, input, select, textarea {
    font-size: 10pt;
  }
}
body {
  font: 1em "Microsoft YaHei", Arial, Helvetica, sans-serif;
  color: #fff;
  background: #333;
  line-height: 1.5;
}
a {
  color: #fff;
  text-decoration: none;
  outline: 0;
}
a:hover {
  text-decoration: none;
  color: #fff;
}
a:focus {
  outline: 0;
}
img {
  border: 0;
  max-width: 100%;
}
h1 {
  font-size: 2.9em;
}
p {
  font-size: 1.3em;
  margin: 1em 0 1.5em 0;
}
.d-flex {
  display: flex;
}
.d-column {
  flex-direction: column;
}
.body {
  display: table;
  position: relative;
  background-image: url(../image/1.jpg);
  background-attachment: fixed;
  background-position:center;
  background-repeat:no-repeat;
  background-size: cover;
  padding: 7em 0;
  color: #fff;
  width: 100%;
  height: 100vh;
  text-align: center
}
.body:after {
  content: '';
  z-index: 0;
  position: absolute;
  background: rgba(0, 0, 0, 0.65);
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}
.cont {
  position: relative;
  z-index: 1;
  text-align: center;
  display: table-cell;
  vertical-align: middle;
  width: 100%;
  padding: 0.7em;
}
.logo {
  margin-bottom: 2em;
  display: inline-block;
}
.logo img {
  width: 300px
}
.btn {
  display: inline-block;
  font-weight: 600;
  line-height: 1.5;
  color: #fff;
  background-color: #007bff;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  border: 0;
  padding: 15px 45px;
  margin: 10px;
  font-size: 16px;
  border-radius: 8px;
}
.btn:hover {
  background-color: #f1404b;
}


@media screen and (max-width: 980px) {
  .body {
    padding: 5em 0;
  }
}
@media screen and (max-width: 480px) {
.logo img {
    width: 250px;
}
	
  .btn {
    width: 100%;
	margin: 10px 0;
	padding: 10px;
	
  }
}

@media screen and (max-width: 321px) {
.logo img {
    width: 200px;
}
h1 {
    font-size: 2em;
}
}