.borda-ficticia {
    border: 1px solid #ffffff !important;
    box-shadow: 0 0 8px #ffffff, 0 0 15px #bdc3c7 !important;
    animation: piscarPrata 1.2s infinite alternate !important;
}

@keyframes piscarPrata {
    0% { box-shadow: 0 0 2px #e0e0e0; border-color: #bdc3c7; }
    100% { box-shadow: 0 0 10px #ffffff, 0 0 20px #bdc3c7; border-color: #ffffff; }
}