body {
    background: #000000;
}
.cabeza {
    background-color:#2a2d2e !important;
    color: white;
    margin-top: 50px;
    border-radius: 10px 10px 0px 0px;
    padding: 10px 0px;
    border: 1px solid;
    border-bottom: 0px;
}

.cuerpo {
    padding: 15px 0px;
    background-color: #ffffff;
    color: black;
    border-radius: 0px 0px 10px 10px;
    border: 1px solid #fff;
}