.manage-login-body {
   /* background: url("../../images/loginbackend.jpg") no-repeat 0% 0%/cover;
    background-color: rgba(20, 12, 22, 0.1)*/
}

.manage-loginpage {
    height: 350px;
    width: 450px;
    padding: 20px;
    position: absolute;
    top: calc(50% - 175px);
    left: calc(50% - 200px);
    background-color: rgba(239, 239, 239, 0.7);
    text-align: center;
    border-radius: 10px;
}

    .manage-loginpage h1 {
        font-size: 32px;
    }

.layui-input {
    width: 297px;
}

.layui-form-select {
    width: 300px;
}