body {
  background-color: rgba(47,73,133,.8);
}
.page-login{
  position:absolute;
  padding-top: 8%;/* 80px */
  padding-bottom: 16%;/* 40px */
  width:100%;
  height:100%;
  background: -webkit-linear-gradient(90deg, #4D6BB1 , #171E35); /* Safari 5.1 - 6.0 */
  background: -o-linear-gradient(90deg, #4D6BB1 , #171E35); /* Opera 11.1 - 12.0 */
  background: -moz-linear-gradient(90deg, #4D6BB1 , #171E35); /* Firefox 3.6 - 15 */
  background: linear-gradient(90deg, #4D6BB1 , #171E35); /* 标准的语法 */
}
.white{
	color:#fff;
}
.form-signin {
  max-width: 330px;
  padding: 15px;
  margin: 0 auto;
}
.form-signin .form-signin-heading,
.form-signin .checkbox {
  margin-bottom: 10px;
}
.form-signin .checkbox {
  font-weight: normal;
}
.form-signin .form-control {
  position: relative;
  height: auto;
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
  padding: 10px;
  font-size: 16px;
}
.form-signin .form-control:focus {
  z-index: 2;
}
.form-signin input[name="username"] {
  margin-bottom: -1px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}
.form-signin input[name="password"] {
  margin-bottom: 10px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}
.footer{
	position: absolute; 
	bottom:4%; /* 30pxx */
	width:100%;
	color:#fff;
}
.modal-header {
    background: #68dff0;
}