.container {
    display: flex;
    background-size: cover;
    background: rgb(226, 226, 226);
    /* Old browsers */
    background: -moz-linear-gradient(top, rgba(226, 226, 226, 1) 0%, rgba(219, 219, 219, 1) 50%, rgba(209, 209, 209, 1) 51%, rgba(254, 254, 254, 1) 100%);
    /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(226, 226, 226, 1)), color-stop(50%, rgba(219, 219, 219, 1)), color-stop(51%, rgba(209, 209, 209, 1)), color-stop(100%, rgba(254, 254, 254, 1)));
    /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top, rgba(226, 226, 226, 1) 0%, rgba(219, 219, 219, 1) 50%, rgba(209, 209, 209, 1) 51%, rgba(254, 254, 254, 1) 100%);
    /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top, rgba(226, 226, 226, 1) 0%, rgba(219, 219, 219, 1) 50%, rgba(209, 209, 209, 1) 51%, rgba(254, 254, 254, 1) 100%);
    /* Opera 11.10+ */
    background: -ms-linear-gradient(top, rgba(226, 226, 226, 1) 0%, rgba(219, 219, 219, 1) 50%, rgba(209, 209, 209, 1) 51%, rgba(254, 254, 254, 1) 100%);
    /* IE10+ */
    background: linear-gradient(to bottom, rgba(226, 226, 226, 1) 0%, rgba(219, 219, 219, 1) 50%, rgba(209, 209, 209, 1) 51%, rgba(254, 254, 254, 1) 100%);
    /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#e2e2e2', endColorstr='#fefefe', GradientType=0);
    /* IE6-9 */
    padding: 20px;
}

.led-box {
    height: 30px;
    margin: 10px 0;
}

.led-box p {
    font-size: 12px;
    text-align: center;
    margin: 1em;
}

.led-red {
    margin: 0 auto;
    width: 24px;
    height: 24px;
    background-color: #F00;
    border-radius: 50%;
    box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 12px;
    -webkit-animation: blinkRed 0.5s infinite;
    -moz-animation: blinkRed 0.5s infinite;
    -ms-animation: blinkRed 0.5s infinite;
    -o-animation: blinkRed 0.5s infinite;
    animation: blinkRed 0.5s infinite;
}

@-webkit-keyframes blinkRed {
    from {
        background-color: #F00;
    }

    50% {
        background-color: #A00;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 0;
    }

    to {
        background-color: #F00;
    }
}

@-moz-keyframes blinkRed {
    from {
        background-color: #F00;
    }

    50% {
        background-color: #A00;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 0;
    }

    to {
        background-color: #F00;
    }
}

@-ms-keyframes blinkRed {
    from {
        background-color: #F00;
    }

    50% {
        background-color: #A00;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 0;
    }

    to {
        background-color: #F00;
    }
}

@-o-keyframes blinkRed {
    from {
        background-color: #F00;
    }

    50% {
        background-color: #A00;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 0;
    }

    to {
        background-color: #F00;
    }
}

@keyframes blinkRed {
    from {
        background-color: #F00;
    }

    50% {
        background-color: #A00;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 0;
    }

    to {
        background-color: #F00;
    }
}

.led-yellow {
    margin: 0 auto;
    width: 24px;
    height: 24px;
    background-color: #FF0;
    border-radius: 50%;
    box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #808002 0 -1px 9px, #FF0 0 2px 12px;
    -webkit-animation: blinkYellow 1s infinite;
    -moz-animation: blinkYellow 1s infinite;
    -ms-animation: blinkYellow 1s infinite;
    -o-animation: blinkYellow 1s infinite;
    animation: blinkYellow 1s infinite;
}

@-webkit-keyframes blinkYellow {
    from {
        background-color: #FF0;
    }

    50% {
        background-color: #AA0;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #808002 0 -1px 9px, #FF0 0 2px 0;
    }

    to {
        background-color: #FF0;
    }
}

@-moz-keyframes blinkYellow {
    from {
        background-color: #FF0;
    }

    50% {
        background-color: #AA0;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #808002 0 -1px 9px, #FF0 0 2px 0;
    }

    to {
        background-color: #FF0;
    }
}

@-ms-keyframes blinkYellow {
    from {
        background-color: #FF0;
    }

    50% {
        background-color: #AA0;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #808002 0 -1px 9px, #FF0 0 2px 0;
    }

    to {
        background-color: #FF0;
    }
}

@-o-keyframes blinkYellow {
    from {
        background-color: #FF0;
    }

    50% {
        background-color: #AA0;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #808002 0 -1px 9px, #FF0 0 2px 0;
    }

    to {
        background-color: #FF0;
    }
}

@keyframes blinkYellow {
    from {
        background-color: #FF0;
    }

    50% {
        background-color: #AA0;
        box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #808002 0 -1px 9px, #FF0 0 2px 0;
    }

    to {
        background-color: #FF0;
    }
}

.led-green {
    margin: 0 auto;
    width: 24px;
    height: 24px;
    background-color: #ABFF00;
    border-radius: 50%;
    box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #304701 0 -1px 9px, #89FF00 0 2px 12px;
}

.led-blue {
    margin: 0 auto;
    width: 24px;
    height: 24px;
    background-color: #24E0FF;
    border-radius: 50%;
    box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #006 0 -1px 9px, #3F8CFF 0 2px 14px;
}