.solution_left ul li:nth-child(1) a {
    background-color: #9a7c4a;
}
.a_fn {
    margin-top: 40px;
}

.a_fn ul {
    display: flex;
    justify-content: space-between;
}
.a_fn ul li{
    background-color: #fff;
    width: 148px;
    padding: 0 24px;
    box-sizing: border-box;
}
.a_fn ul li h3{
    font-size: 18px;
    text-align: center;
    padding: 20px 0 15px;
    border-bottom: 1px solid #eee;
}
.a_fn ul li p{
    margin: 15px 0 25px 0;
    color: #666;
}
.features{
    margin-top: 60px;
}
.features ul li{
    float: left;
    margin-right: 40px;
}
.features ul li p{
    font-size: 18px;
    line-height: 40px;
    color: #666;
    letter-spacing: 0.9px;
}