body {
    background-color: whitesmoke;
    font-family: sans-serif;
}

#contenedorlogin {
    margin: auto;
    color: white;
    width: 250px;
    padding: 1em;
    border-radius: 25px;
    text-align: center;

    position:absolute;
    top:15%;
    left:50%;
    margin-top:-50px; /* this is half the height of your div*/  
    margin-left:-125px; /*this is half of width of your div*/
    
    
    font-size: 12;
    text-shadow: #000000 5px 5px 15px; 
    

    background-color: darkgrey;

    border-radius: 15px;
    border-style: solid;
    border-width: 2px;
    border-color: white;
    box-shadow: #142780 0px 0px 10px;
    

    background-color: #3f8cff;
    background-image: -moz-linear-gradient(90deg,  var(--menu_fondo-bt),  var(--menu_fondo-hl));
    background-image: -ms-linear-gradient(90deg,  var(--menu_fondo-bt),  var(--menu_fondo-hl));
    background-image: -o-linear-gradient(90deg,  var(--menu_fondo-bt),  var(--menu_fondo-hl));
    background-image: -webkit-linear-gradient(90deg,  var(--menu_fondo-bt),  var(--menu_fondo-hl));
    background-image: linear-gradient(90deg,  var(--menu_fondo-bt),  var(--menu_fondo-hl));
    
   
}

#textologin {
   
    width: 100%;
    text-align: center;
    font-size: 2.5em;
    font-weight: bolder;
}

#formlogin{
    margin: auto;
   
    padding:10px;
}

#formlogin * {
   margin:10px;
}

#formlogin label {
    font-weight: bold;
    text-align: center;
}

#botonsubmit {
    display: block;
    margin: auto;
    padding: 1.5%;
}