body{
    background: url(/style/image/1.jpg) no-repeat;
    background-size: 100% 1080px;
}
.signin_panel{
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50% , -50%);
    box-shadow: 0px 0px 10px #000000;
    border-radius: 3px;
    background: #fff;
    padding: 30px;
}
/* logo */
.signin_panel_logo img{
    width: 160px;
    display: block;
    margin: 0px auto;
}
/* 输入框 */
.fillin{
    margin: 0px auto 30px;
}
.fillin ul li{
    height: 34px;
    padding: 10px 30px;
    display: flex;
    align-items: center;
}
.fillin ul li span{
    width: 50px;
    font-size: 14px;
    margin-right: 10px;
}
.fillin ul li input{
    flex: 1;
    padding: 5px 10px;
    height: 25px;
    border: 1px solid #ddd;
    text-indent: 5px;
    outline:none;
}
.fillin ul li input:last-of-type{
    width: 100px;
}
.fillin ul li img{
    width: 150px;
    margin-left: 10px;
}
/* 登录按钮 */
.signin_but{
    width: 200px;
    height: 40px;
    background:var(--one-color);
    color: #fff;
    font-weight: 600px;
    cursor: pointer;
    border-radius: 3px;
    margin: 0px auto;
    display: flex;
    justify-content: center;
    align-items: center;
}
.signin_but:hover{
    background: var(--but-hover);
}
.signin_but img{
    display: none;
    width: 20px;
    height: 20px;
    animation: spin 2s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}