minio/browser/app/less/inc/login.less

.login {
    height: 100vh;
    padding: 1.5rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login__inner {
    max-width: 400px;
    width: 90%;
    flex-shrink: 0;
}

.login__header {
    margin-bottom: 1rem;
}

.login__form {
    background-color: @white;
    padding: 2rem;

    .form-group__field {
        text-align: center;
    }
}

.login__logo {
    width: 2rem;
}

.login__host {
    color: @text-muted-color;
    margin-top: -0.5rem;
    font-size: @font-size-small;
}

.login__btn {
    margin-top: 0.5rem;
    width: 2.6rem;
    height: 2.6rem;
    line-height: 100%;
    border-radius: 50%;
    background-color: transparent;
    border: 1px solid darken(@input-border-color, 5%);
    .transition(all);
    .transition-duration(500ms);
    position: relative;
    overflow: hidden;

    &:hover {
        border-color: darken(@input-border-color, 15%);

        &:before {
            left: 2.6rem;
            .opacity(0);
        }

        &:after {
            .opacity(1);
            left: 0;
        }
    }

    &:before,
    &:after {
        display: flex;
        align-items: center;
        justify-content: center;
        content: '\f301';
        font-family: @font-family-icon;
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        .transition(all);
        .transition-duration(300ms);
    }

    &:after {
        left: -2.6rem;
        .opacity(0);
    }
}