@charset "utf-8";
* {padding: 0; margin: 0; color: #c4c3ca; font-size: 14px;}
body {
    background-image: url("../images/ba.png");
    background-size: cover;
    background-attachment: fixed;
    background-repeat: no-repeat;
}
.bg {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.45);
    /* display:none对动画transitoin 不支持 opacity支持 */
    display: none;
}
.bg .login-card {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -175px;
    margin-left: -150px;
    border-radius: 5px;
} 

.card-active{
    animation: a .6s;
}
.card-active2 {
    animation: b .3s;
}
.active {
  display: block;
}
/* @keyframes 规则，您能够创建动画。 */
/* 通过关键词 "from" 和 "to"，等价于 0% 和 100%。
0% 是动画的开始时间，100% 动画的结束时间。 */
@keyframes a {
    from {opacity: 0; top: 40%}
    to {opacity: 1; top: 50%}
}
@keyframes b {
    from {opacity: 1;}
    to {opacity: 0; margin-left: -250px;}
}


.rotate {
    width: 300px;
    height: 488px;
    background-color: #2a2b38;
    border-radius: 15px;
    /* preserve-3d表示所有子元素在3D空间中呈现 */
    transform-style: preserve-3d;
    /* perspective：视距，表示视点距离屏幕的长短。视点，用于模拟透视效果时人眼的位置。 */
    transform: perspective(700px);
    transition: all .6s ease;
}
.rotate .form-group {
    position: relative;
    margin: 20px;
}
.rotate .form-style {
    background-color: #1f2029;
    padding: 13px 40px;
    outline: none;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    color: #c4c3ca;
}
.rotate .form-group input::-webkit-input-placeholder {
    opacity: 0.7;
    transition: all 0.1s linear;
}
.rotate .form-group input:focus::-webkit-input-placeholder {
    opacity: 0;
}
.rotate .form-group .input-icon {
    position: absolute;
    top:10px;
    left:20px;
}
.rotate .input-btn {
    border-radius: 4px;
    height: 44px;
    padding: 0 30px;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    border: none;
    background-color: #ffeba7;
    color: #102770;
    box-shadow: 0 8px 24px 0 rgba(255, 235, 167, 0.2);
    outline: none;
    cursor: pointer;
}
.rotate .card-back,.rotate .card-front {
    text-align: center;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}
.rotate .card-back {
    transform: translateZ(1px);
}
.rotate .card-front {
    transform: rotateY(180deg) translateZ(25px);
}
.change {
    transform: rotateY(-180deg);
}
.rotate h4 {
    padding-top: 20px;
    font-weight: 600;
    font-size: 1.5rem;
    color: #c4c3ca;
}
.rotate .btn {
    text-decoration: underline;
    cursor: pointer;
    transition: all linear .1s;
}
.rotate .btn:hover {
    color: #ffeba7;
}
.rotate .form-left {
    text-align: left;
}
.rotate .form-font1 {
    margin-left: 50px;
    cursor: pointer;
}
.rotate .top_nav {
    position: absolute;
    top: 10px;
    right: 10px;
    display: block;
    width: 35px;
    height: 35px;
    background: url("../images/close_button.png") no-repeat 0px 0px;
    transition: 0.2s;
    cursor: pointer;
}
.rotate .top_nav:hover {
    background: url("../images/close_button.png") no-repeat 0px -35px;
}
#registerForm .codeButtom{
    cursor: pointer;
    background-color: #ffeba7;
    color: #102770;
}
.disabledbutn{
    cursor:progress;
    background-color: #1f2029 !important;
    color: #fff !important;
}