.divider:after,
.divider:before {
    content: "";
    flex: 1;
    height: 1px;
    background: #eee;
}
.filtro {
    background-image: linear-gradient(rgba(64,64,64,0.8),rgba(64,64,64,0.8)),url(../../../Images/fondoLogin.JPG); 
    background-size: cover;
    height: 100%;
    width: 100%;
    position: absolute;
}
.fondoBox {
    background-color: white;
}
div.vertical-line {
    /*width: 1em;*/ /* Line width */
    width:1px;
    background-color: white; /* Line color */
    height: 100%; /* Override in-line if you want specific height. */
    float: left; /* Causes the line to float to left of content. You can instead use position:absolute or display:inline-block if this fits better with your design */
}