.about-us {
    width: 66.667vw;
    margin: 4.271vw auto 10.417vw;
}

.about-us .title {
    position: relative;
    width: 57.656vw;
    margin-bottom: 2.708vw;
    font-size: 2.135vw;
    font-weight: 700;
    color: #393939;
}

.about-us .title::after {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
       -moz-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
         -o-transform: translateY(-50%);
            transform: translateY(-50%);
    right: -8.956vw;
    content: '';
    width: 7.552vw;
    height: 4.948vw;
    background-color: #189C3E;
}

.one-img {
    width: 100%;
    margin-bottom: 2.813vw;
}

.two-img {
    margin: 3.844vw 0 2.813vw;
}

.two-img img {
    margin-top: 1vw;
    height: 19.167vw;
}

.two-img img:first-child {
    float: left;
}

.two-img img:last-child {
    float: right;
}