.im-caret {
    -webkit-animation: 1s blink step-end infinite;
    -moz-animation: 1s blink step-end infinite;
    -ms-animation: 1s blink step-end infinite;
    -o-animation: 1s blink step-end infinite;
    animation: 1s blink step-end infinite;
}

@keyframes blink {
    from, to {
        border-right-color: black;
    }
    50% {
        border-right-color: transparent;
    }
}

@-moz-keyframes blink {
    from, to {
        border-right-color: black;
    }
    50% {
        border-right-color: transparent;
    }
}

@-webkit-keyframes blink {
    from, to {
        border-right-color: black;
    }
    50% {
        border-right-color: transparent;
    }
}

@-ms-keyframes blink {
    from, to {
        border-right-color: black;
    }
    50% {
        border-right-color: transparent;
    }
}

@-o-keyframes blink {
    from, to {
        border-right-color: black;
    }
    50% {
        border-right-color: transparent;
    }
}

.im-static {
    color: grey;
}