.ie-message-visual-state {
    display: none;
}
.app-visual-state {
    display: block;
}
<!--[if IE] > .ie-message-visual-state {
    display: block;
}

@media all and (forced-color-adjust: none), (forced-colors: active) {
    .ie-message-visual-state {
        display: block;
    }
    .app-visual-state {
        display: none;
    }

    html,
    body {
        height: 100%;
        overflow: hidden;
    }

    body {
        background-size: cover;
        background-position: center;
        background-color: #4040bf;
        background: -webkit-gradient(linear, left top, right bottom, from(#4040bf), to(#a6a6d8));
        background: linear-gradient(to bottom right, #4040bf, #a6a6d8);
        background-attachment: fixed;
        padding: 0;
        font-size: 0.9rem;
        font-family: Inter, Nunito, "Open Sans", Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;
    }

    .auth-wrapper {
        overflow-y: auto;
        height: 100%;
    }

    .auth-wrapper .all-wrapper {
        overflow-y: hidden;
        padding: 0;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        justify-content: center;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
        height: 100%;
        min-height: 100vh;
        margin: 0px auto;
        position: relative;
    }

    .auth-box-w {
        background-color: #fff;
        border-radius: 6px;
        -webkit-box-shadow: 0px 0px 40px rgb(0 0 0 / 10%);
        box-shadow: 0px 0px 40px rgb(0 0 0 / 10%);
        overflow: hidden;
        width: 585px;
        max-width: calc(100% - 2rem);
        text-align: center;
        margin: 2rem 1rem;
    }

    .auth-box-w.si-app .logo-w {
        padding: 0 1.5rem;
        background-color: #262660;
        color: #ffffff;
        min-height: 100px;
        text-align: center;
    }

    .auth-box-w.si-app .logo-w a {
        width: 100%;
        display: inline-block;
    }

    a {
        color: #262660;
        text-decoration: none;
        background-color: transparent;
    }

    .logo-image {
        width: 75%;
        max-width: 300px;
        height: auto;
    }

    .alert.alert-danger {
        border-radius: 5px 5px 5px 5px;
        border-width: 0;
        font-weight: 400;
        padding: 0.75rem 1.25rem;
        background-color: #dc3545;
        border: 2px solid #dc3545;
        color: #fff;
        margin-bottom: 0;
    }

    .alert a {
        text-decoration: underline;
        color: inherit;
    }

    .p-4 {
        padding: 1.5rem;
    }
}
<![endif]-->
/* To be generated */
.pre-loading {
    background: linear-gradient(to bottom right, #4040bf, #65caf1);
    height: 100vh;
    width: 100vw;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.pre-loading > .icon-wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.pre-loading > .icon-wrapper > svg {
    color: #ffffff;
    width: 50px;
    height: 50px;
    animation: fa-spin 2s linear infinite;
}

@keyframes fa-spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}