#layerStartBox {
    display: flex;
    width: 100%;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: stretch;
    margin: 70px 0;
}

.itemStart {
    width: 100%;
    border: 1px solid #eee;
    margin-bottom: 50px;
}

.itemStart13 {
    width: 30%;
    border: 1px solid #eee;
    margin-bottom: 50px;
}

.itemStart23 {
    width: 65%;
    border: 1px solid #eee;
    margin-bottom: 50px;
}

#layerStartBox .content-text {
    padding: 25px;
    margin: 0;
}

#layerStartBox .content-image img {
    width: 100%;
    height: auto;
    display: block;
}

#layerStartBox .head {
    margin-bottom: 10px;
}

#layerStartBox .head .title {
    color: var(--main-color);
    font-size: 1.6rem;
    font-weight: 600;
    line-height: 2rem;
}

#layerStartBox .head .subtitle {
    color: var(--main-color);
    font-size: 1.3rem;
    font-weight: 300;
    line-height: 2rem;
}

@media only screen and (max-width: 950px) {
    .itemStart13 {
        width: 45%;
    }
    .itemStart23 {
        width: 45%;
    }
}

@media only screen and (max-width: 600px) {
    .itemStart13,
    .itemStart23 {
        width: 100%;
    }
}