.index_background{
    margin: 1px 0 0 0;
    background:linear-gradient(
                to left,
                rgb(116, 179, 238),
                rgb(108, 230, 169)
                );           
}

.flip_card{
    transform-style: preserve-3d;
    transition: 0.6s;
    position: relative;
    perspective: 1000px;
}
.face{
    backface-visibility:hidden;
    z-index: 1;
}

@keyframes fadeInLeft{
    from{
        opacity: 0;
        transform: translate3d(-100%, 0, 0);
    }

    to{
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.index_head_card{
    animation-duration: 1.5s;
    animation-fill-mode: both;
    animation-name: fadeInLeft;

}
.index_head_card{
    background: rgba( 255, 255, 255, 0.2 );
    box-shadow: 0 8px 32px 0 rgba( 0, 0, 0, 0.37 );
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 15px;
    margin-top: 15%;
    margin-left: 38%;
    margin-right: 38%;
    transition: 0.3s;
}

.index_head_card:hover{
    backdrop-filter: blur(11px);
    box-shadow: 0 8px 39px 0 rgba(0, 0, 0, 0.37);
    margin-top: 12%;
    margin-left: 25%;
    margin-right: 25%;
}

.index_head_img{
    width:130px;
    margin-top:-50px;
    transition: 0.8s;
    border-radius: 50%;
    -webkit-border-radius: 50%;
}

.index_head_card:hover .rotare360{
    transform:rotate(360deg);
}

.txt_big{
    font-weight: 300;
    font-size: 200%;
}
.txt_small{
    font-weight: 120;
    font-size: 20%;
    color: rgba(57, 158, 247, 0.662);
}

.buttones{
    padding:2%;
}

.button{
    font-size:15px;
    font-weight: 300;
    background-color: Transparent;
    background-repeat:no-repeat;
    border: hidden;
    cursor: pointer;
    overflow: hidden;
    transition: 0.3s;
    width: 0;
    height: 0;
}

.button:hover{
    background-color: rgba(247, 211, 232, 0.87);
    color:rgb(255, 255, 255);
    border: solid;
    border-width:1px;
    border-color: rgba(0, 0, 0, 0.223);
    border-radius: 16px;
}

.index_head_card:hover .button{
    width: 27%!important;
    height:80px!important;
}



/* 登录页面 */
.back_background{
    display: none;
    backface-visibility:hidden;
    transform: rotateY(180deg);
    position: absolute;
    height: 90vh;
    width: 100vw;
}

.true-back{
    
    height: 60vh;
    width: 44%;
    position: absolute;
    left: 28%;
    top: 12%;
    z-index: 3;
}

.pp{
    /* background-color: bisque; */
    /* padding: 1%; */
    position: absolute;
    z-index: 4;
}
#pp1{
    top: 0%;
    height: 30%;
    left: 0%;
    width: 33%;
}
#pp2{
    top: 0%;
    height: 30%;
    left: 33%;
    width: 34%;
}
#pp3{
    top: 0%;
    height: 30%;
    left: 67%;
    width: 33%;
}
#pp4{
    top: 30%;
    height: 40%;
    left: 0%;
    width: 33%;
}
#pp6{
    top: 30%;
    height: 40%;
    left: 67%;
    width: 33%;
}
#pp7{
    top: 70%;
    height: 30%;
    left: 0%;
    width: 33%;
}
#pp8{
    top: 70%;
    height: 30%;
    left: 33%;
    width: 34%;
}
#pp9{
    top: 70%;
    height: 30%;
    left: 67%;
    width: 33%;
}


.back{
    padding: 2%;
    height: 34%;
    width: 30%;
    
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.2);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-radius: 25px;
    box-shadow:inset 0 0 6px rgba(255, 255, 255, 0.2);
    
    position: absolute;
    top: 30%; 
    left: 33%;
    z-index: 4;
}

.login{
    display: flex;
    flex-direction: column;
    align-items: center;
}

.login_title{
    align-self:center;
    font-size: 200%;
    font-weight: 1000;
}

.password{
    text-align: center;
    margin: 10% 10% 8% 10%;
    width: 60%;
    border: 0;
    padding: 5% 8%;
    /* border-radius: 5%; */
}

.submit{
    margin: 5%;
    width: 30%;
    height: 30px;
    font-weight: 500;
    background-color: rgba(110, 181, 222, 0.75);
    border-radius: 5px ;
    border: 10px;
}



.footer{
    position: absolute;
	bottom: 0;
    width: 100%;
    text-align: center;
    padding: 10px 0;
    float: left;
    left: 0;
    border-top: 1px dashed #cccccc;
}

.footer p {
	color:#919191;
	font-size:12px;
}
.footer a{
    color: #919191;
    font-size:1px;
}