* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}
/* Reset básico */
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f2f4f8;
}

/* CONTENIDO PRINCIPAL */
.main-content {
    padding: 30px;
    margin-left: 0px !important;
}
.card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}