.solution .machine{
    width: 100%;
    margin-bottom: 20px;
}

.solution .machine .ma_ul{
    width: 100%;
    height: 300px;
    overflow: hidden;
    overflow-y: auto;
    padding: 0;
    margin-top: 20px;
    border-bottom: 2px solid #ccc;
}

.solution .machine .ma_ul::-webkit-scrollbar{
    display: none;
}

.solution .machine .ma_ul li{
    height: 60px;
    line-height: 60px;
    padding-left: 50px;
    width: 100%;
    border-bottom: 1px solid #e0e0e0;
    box-sizing: border-box;
    transition: all 0.3s ease-in-out;
}

.solution .machine .ma_ul li:hover{
    cursor: pointer;
    background-color: #ccc;
    color: #fff;
}

.solution .machine .ma_ul .ma_li a{
    transition: all 0.3s ease-in-out;
}
.solution .machine .ma_ul .ma_li:hover a{
    color: #fff !important;
}

.ma_nal{
    width: 100%;
    position: relative;
}

.ma_nal ul{
    float: right;
    margin-right: 20px;
}