#mainshadow {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 1);
}
#mainshadow .main {
  width: 100%;
  max-width: 500px;
  height: 470px;
  padding: 30px;
  background-color: #fff;
  border-radius: 2px;
  color: #333;
  box-shadow: 0 10px 60px 0 rgba(29, 29, 31, 0.09);
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  margin: auto;
  text-align: center;
}
#mainshadow .main img {
  width: 200px;
  height: 200px;
  margin: auto;
  display: block;
}
#mainshadow .main .mk-side-form {
  margin-bottom: 28px;
}
#mainshadow .main .mk-side-form .clearfix {
  clear: both;
}
#mainshadow .main .mk-side-form .pw-tip {
  font-weight: normal;
  font-size: 18px;
  text-align: center;
  margin: 25px auto;
}
#mainshadow .main .mk-side-form input {
  float: left;
  padding: 2px 10px;
  box-sizing: content-box;
  width: 70%;
  height: 37px;
  border: 2px solid #19ad19;
  border-radius: 2px 0 0 2px;
  line-height: 37px;
}
#mainshadow .main .mk-side-form .btn {
  position: relative;
  overflow: visible;
  width: 23%;
  height: 44px;
  border-radius: 0 2px 2px 0;
  text-transform: uppercase;
  border: 0;
  background: #6abd09;
  color: #fff;
  cursor: pointer;
  opacity: 1;
  user-select: none;
  line-height: 44px;
  display: inline-block;
  float: right;
}
#mainshadow .main .mk-side-form .tip {
  color: #ff0000;
}