.loader_button { position: relative; }

    .loader_button .loader_conti { position: absolute; left: 8px; top: 50%; transform: translateY(-50%); pointer-events: none; opacity: 0; }
    .loader_button.active { opacity: 0.8; pointer-events: none; }
        .loader_button.active .loader_conti { opacity: 1; }

.loader_for_button { border: 5px solid #fff; /* Light grey */ border-top: 5px solid #76ae00; /* Blue */ border-radius: 50%; width: 15px; height: 15px; animation: spin 2s linear infinite; }

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}