.close-alert-btn {
    right: 15px;
    cursor: pointer;
}

.online-users {
    display: inline-block;
    width: 10px;
    height: 10px;
    background-color: #28a745;
    border-radius: 50%;
    box-shadow: 0 0 5px #28a745;
    animation: pulse 1.5s infinite;
    margin-bottom: 8px;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 5px #28a745;
    }

    50% {
        transform: scale(1.3);
        box-shadow: 0 0 10px #28a745;
    }

    100% {
        transform: scale(1);
        box-shadow: 0 0 5px #28a745;
    }
}