body 
    {
        margin: 0;
        padding: 0;
        background-image: url(hielo_001.jpg);
        -webkit-background-size: cover;
        background-size: cover;
        font-family: monospace;
        
    }
h1 
    {
        padding: 10px;
    }
.titulo 
    {
        width: 863px;
        height: auto;
        background: rgba(0,0,0,.15);
        color: white;
        top: 50%;
        left: 50%;
        position: absolute;
        transform: translate(-50%, -50%);
        box-shadow: 5px 5px 10px #000;
    }
.datos 
    {
        display: flex;
        justify-content: center;
        width: 843px;
        padding: 10px;
    }
.cajas_user_pass 
    {
        margin: 0 auto;
        width: 418px;
        padding-top: 10px;
        padding-bottom: 10px;
    }
.enviar_css 
    {
        padding: 10px;
    }
.enviar_css_hijo 
    {
        width: 100%;
        padding: 10px;
    }
.fuente_fam 
    {
        background-color: #e7e7e7;
        border: none;
        color: black;
        padding: 8px 16px;
        text-align: center;
        text-decoration: none;
        display: inline-block;
        font-size: 16px;
        margin: 4px 2px;
        cursor: pointer;
    }
p 
    {
        display: flex;
        background-color: #e7e7e7;
        color: black;
        border: none;
        justify-content: center;
        width: 843px;
        padding: 10px;
    }