<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1800 1100"> <path fill="#fff" d="M0 0h1800v1100H0z"/> <path fill="#003580" d="M0 400h1800v300H0z"/> <path fill="#003580" d="M500 0h300v1100H500z"/> </svg>