.meu-login {
 
background: url('https://salmirveiculos.com.br/gestorweb/file_systema/1/geometric.jpg') no-repeat center center fixed !important; 
-webkit-background-size: cover  !important;
-moz-background-size: cover  !important;
-o-background-size: cover  !important;
background-size: cover  !important;
}