.part {position: relative;z-index: 9;background: #fff;margin: 3rem 0;}
.part .title{margin-bottom: 2rem;}
.part .tt{ padding-bottom: 1.5rem;margin-bottom: 1.5rem;border-bottom:1px solid #c7c7c7;position: relative;}
.part .tt h1{ font-size: 2rem; color: #404040;}

.part .cont .intro{ color: #5b5b5b; line-height: 2rem;text-indent: 2rem;text-align: justify;}
.part .cont .intro p {font-size:1rem;}

@media  screen and (max-width: 765px){
    .part .tt h1 { font-size: 1.5rem;}
    .part .tt{ padding-bottom: 1rem;margin-bottom: 1rem;}
    .part .company {padding: 1.5rem 0;}
}