.checkBox {
    display: flex;
    align-items: center;
}

.checkBox input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    border: 2px solid #61ad4c;
    border-radius: 3px;
    display: inline-block;
    height: 22px;
    margin: -11px 11px 0 0;
    overflow: hidden;
    position: relative;
    vertical-align: top;
    width: 22px;
}

.checkBox input[type="checkbox"]:checked:before {
    content: "";
    animation: arrowEffect .28s ease-in-out 0s;
    border: solid #61ad4c;
    border-width: 0 3.6px 3.6px 0;
    bottom: 0;
    display: block;
    height: 14px;
    left: 0;
    margin: auto;
    position: absolute;
    right: 0;
    top: 0;
    transform: rotate(45deg) translateY(-2px);
    width: 8px;
    z-index: 100;
}

@keyframes arrowEffect {
    0% {
        left: -40px;
    }

    80% {
        left: 0;
    }
}

@media screen and (max-width: 900px) {
    .checkBox {
        justify-content: space-between;
    }

    body .checkBox .fLeft {
        height: 26px;
        width: 26px;
    }

    .checkBox .fRight {
        width: 96%;
    }
}