* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  font-size: 14px;

  display: grid;
  place-items: center;

  min-height: 100vh;
  max-width: 100vw;

  overflow-x: hidden;
  overflow-y: auto;
}

body > *,
.header {
  width: 100%;
}

.required-mark {
  color: #f33;
  font-weight: 600;
  font-size: 1em;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    grid-template-columns: repeat(2, 1fr); /* Dos columnas */
  }

  .full-width {
    grid-column: span 2; /* Ocupa las dos columnas */
  }
}

@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr; /* Una columna */
  }

  .full-width {
    grid-column: span 1; /* Ocupa una columna */
  }
}