#a001 {
  height: 100vh;
  min-height: 1000px;
}
#a001[data-bg] {
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: center;
      justify-content: center;
  -ms-flex-align: center;
      align-items: center;
}
#a001[data-bg]:after {
  content: "";
  width: 100vw;
  height: 100vh;
  background: rgba(51, 51, 51, 0.3);
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  z-index: 1;
}
#a001[data-bg="1"] {
  background-image: url(../img/login/login_image.jpg);
}
#a001[data-bg="2"] {
  background-image: url(../img/login/login_image.jpg);
}
#a001[data-bg="3"] {
  background-image: url(../img/login/login_image.jpg);
}
#a001[data-bg="4"] {
  background-image: url(../img/login/login_image.jpg);
}
#a001 > div {
  width: 100%;
  min-width: 1600px;
  position: relative;
  z-index: 2;
}
#a001 > div > article {
  margin: auto;
  padding: 30px 40px 40px 40px;
  width: 600px;
  background-color: #fff;
  position: relative;
  z-index: 3;
  overflow: hidden;
  border-radius: 15px;
  box-shadow: 0px 0px 3px 0px rgba(0, 0, 0, 0.5);
  -moz-box-shadow: 0px 0px 3px 0px rgba(0, 0, 0, 0.5);
  -webkit-box-shadow: 0px 0px 3px 0px rgba(0, 0, 0, 0.5);
}
#a001 > div > article form h1 {
  margin: 0 auto 30px auto;
  width: 250px;
}
#a001 > div > article form > ol {
  margin-bottom: 30px;
  height: 50px;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: center;
      justify-content: center;
  -ms-flex-align: center;
      align-items: center;
}
#a001 > div > article form > ol li {
  height: 100%;
}
#a001 > div > article form > ol li img {
  width: auto;
  height: 100%;
}
#a001 > div > article form > ul li:nth-of-type(2) {
  margin-top: 15px;
}
#a001 > div > article form > ul li:nth-of-type(3) {
  margin-top: 50px;
}
#a001 > div > article form > ul li dl {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: start;
      justify-content: flex-start;
  -ms-flex-align: center;
      align-items: center;
}
#a001 > div > article form > ul li dl dt {
  width: 120px;
  font-size: 16px;
}
#a001 > div > article form > ul li dl dd {
  width: calc(100% - 130px);
}
#a001 > div > article form > ul li a {
  margin: 0 auto;
  width: 300px;
  height: 45px;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: center;
      justify-content: center;
  -ms-flex-align: center;
      align-items: center;
}
#a001 > div > article > div [data-hiddenBird] {
  width: 40px;
  position: absolute;
  z-index: 2;
}
#a001 > div > article > div [data-hiddenBird="1"] {
  bottom: -40px;
}
#a001 > div > article > div [data-hiddenBird="1"][data-position="1"] {
  left: 10px;
}
#a001 > div > article > div [data-hiddenBird="1"][data-position="2"] {
  left: 60px;
}
#a001 > div > article > div [data-hiddenBird="2"] {
  bottom: -40px;
  transform: scale(-1, 1);
}
#a001 > div > article > div [data-hiddenBird="2"][data-position="1"] {
  right: 10px;
}
#a001 > div > article > div [data-hiddenBird="2"][data-position="2"] {
  right: 60px;
}
#a001 > div > article > div [data-hiddenBird="3"] {
  top: -40px;
  transform: scale(1, -1);
}
#a001 > div > article > div [data-hiddenBird="3"][data-position="1"] {
  left: 10px;
}
#a001 > div > article > div [data-hiddenBird="3"][data-position="2"] {
  left: 60px;
}
#a001 > div > article > div [data-hiddenBird="4"] {
  top: -40px;
  transform: scale(-1, -1);
}
#a001 > div > article > div [data-hiddenBird="4"][data-position="1"] {
  right: 10px;
}
#a001 > div > article > div [data-hiddenBird="4"][data-position="2"] {
  right: 60px;
}