@media(max-width: 576px) {
    .login{
        z-index: 3;
    }
    .login:after{
        content: '""';
        position: absolute;
        z-index: -1;
        width: 100%;
        height: 100%;
        display: "block";
        opacity: 0.2;
        background-image: url("../img/login_bg.jpg");
        background-size: cover;
        background-position: center center;
        background-color: #000;
    }
}
.loader {
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: url("../img/loading.gif") 50% 50% no-repeat #f9f9f9;
    opacity:0.7
}
#app{
    width: 100vw;
    height: 100vh;
    overflow-x: hidden;
    padding: 0;
    margin: 0;
    background-color: #f0f0f0;
}
.login {
    height: 100%;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
}

.login .main {
    background-color: #fff;
    border: 1px solid #00000000;
    border-radius: 12px;
}
.login .login-header {
    font-size: 24px;
    font-weight: bold;
}
.login .login_btn {
    background-color: #13b6d5 !important;
}
.login .main-footer {
    text-align: center;
    font-size: 12px;
    color: #ccc;
    margin-top: 1rem;
}

@media(min-width: 1450px) {
    .login .login_bg {
        height: 450px !important;
        margin-top: 4rem !important;
        margin-bottom: 4rem  !important;
    }
}
@media(min-width: 1600px) {
    .login .login_bg {
        height: 500px !important;
        margin-top: 5.2rem !important;
        margin-bottom: 5.2rem  !important;
    }
}
.login .login_bg {
    height: 400px;
    margin-top: 3rem;
    margin-bottom: 3rem;
}

.help-block{
	    color:#ff4d4d;
    }