#cajaformulario {
    float: left; 
    padding: 20px;
    border: 1px solid #999999;
}
#cajadatos {
    float: left; 
    width: 400px; 
    margin-left: 20px; 
    padding: 20px; 
    border: 1px solid #999999;
}
#clave, #texto {
    width: 200px;
}
#cajadatos > div {
    padding: 5px;
    border-bottom: 1px solid #999999; 
}