index.css

html, body {
    font-weight: 300;
    margin: 0;
    padding: 0;
}

.title {
    text-align: center;
    font-size: 16px;
    background: #3b8dbb;
    color: white;
    margin: 0;
    padding: 1rem;
}

.keyTipBox {
    margin: 5px;
    word-break: break-all;
}

.getInfoBox {
    display: flex;
    flex: 1;
    justify-content: flex-start;
    align-items: center;
    margin: 25px;
}

.getInfoBox textarea {
    display: flex;
    flex: 4;
    height: 35px;
    outline: none;
    border-radius: 3px;
    padding: 5px;
}

.getInfoBox button {
    margin: 0 10px;
    width: 60px;
    text-align: center;
    justify-content: center;
    align-items: center;
    height: 45px;
    border-radius: 3px;
    outline: none;
    border: 1px solid #3c8dbc;
    font-size: 14px;
    cursor: pointer;
    background-color: #3c8dbc;
    color: #fff;
    font-weight: 300;
}

.getInfoBox button:hover {
    background-color: #387ca8;
}

#info_box {
    word-break: break-all;
}

textarea::placeholder {
    padding: 8px;
    font-weight: 300;
}

/*========= start loading =========*/

.ball-pulse {
    transform: scale(1);
}

.ball-pulse > div:nth-child(1) {
    -webkit-animation: ball-pulse-scale 0.75s -0.24s infinite cubic-bezier(0.2, 0.68, 0.18, 1.08);
    animation: ball-pulse-scale 0.75s -0.24s infinite cubic-bezier(0.2, 0.68, 0.18, 1.08);
}

.ball-pulse > div:nth-child(2) {
    -webkit-animation: ball-pulse-scale 0.75s -0.12s infinite cubic-bezier(0.2, 0.68, 0.18, 1.08);
    animation: ball-pulse-scale 0.75s -0.12s infinite cubic-bezier(0.2, 0.68, 0.18, 1.08);
}

.ball-pulse > div:nth-child(3) {
    -webkit-animation: ball-pulse-scale 0.75s 0s infinite cubic-bezier(0.2, 0.68, 0.18, 1.08);
    animation: ball-pulse-scale 0.75s 0s infinite cubic-bezier(0.2, 0.68, 0.18, 1.08);
}

.ball-pulse > div {
    background-color: #0FB560;
    width: 15px;
    height: 15px;
    border-radius: 100%;
    margin: 2px;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    display: inline-block;
}

@keyframes ball-pulse-scale {
    0% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 1;
    }
    45% {
        -webkit-transform: scale(0.1);
        transform: scale(0.1);
        opacity: 0.7;
    }
    80% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 1;
    }
}

/*========= end loading =========*/