.dot-flashing {
    position: relative;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: #dcdcdc;
    color: #dcdcdc;
    animation: dotFlashing 1s infinite linear alternate;
    animation-delay: .5s;
}

.dot-flashing::before, .dot-flashing::after {
    content: '';
    display: inline-block;
    position: absolute;
    top: 0;
}

.dot-flashing::before {
    left: -15px;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: #dcdcdc;
    color: #dcdcdc;
    animation: dotFlashing 1s infinite alternate;
    animation-delay: 0s;
}

.dot-flashing::after {
    left: 15px;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: #dcdcdc;
    color: #dcdcdc;
    animation: dotFlashing 1s infinite alternate;
    animation-delay: 1s;
}

@keyframes dotFlashing {
    0% {
        background-color: #dcdcdc;
    }
    50%,
    100% {
        background-color: #ffffff;
    }
}