#content {
    margin-left: 0;
}
#sidebar-menu, .right-header, #hamburger {
    display: none !important;
    visibility: hidden !important;
}

#maintext::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url(https://portal.unimar.br/alunos/public/images/background-login.jpg);
    background-size: cover;
    background-position: center;
    filter: grayscale(100%) brightness(30%);
    z-index: 0;
}

#basic_card {
    box-shadow: 0px 0px 1em 0px #000000;
    width: 350px;
    margin: 0;
    position: relative;
    top: 45%;
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
}

#content {
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
}

.signup {
    position: relative;
    margin-top: 20px;
    font-size: 12px;
    letter-spacing: 1px;
    color: #555;
    text-transform: uppercase;
    font-weight: 300;
    font-family: 'Poppins', sans-serif;
}

a {
    font-weight: 600;
    text-decoration: none !important;
    color: #677eff !important;

}