.top_center li a{
  color: #000;
}
footer.on {
    margin-top: 0em;
}
.trtions.on .top_center li a{
  color: #fff;
}
.sticky{
  position: sticky;
}
.relative{
  position: relative; 
}
.w-full{
  width: 100%;
}
.w-1200px{
  width: 120rem;
}
.w-1440px{
  width: 144rem;
}
.flex{
  display: flex;
}
.justify-center{
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.items-center{
  align-items: center;
}
.flex-1{
  flex: 1;
}
.mx-auto{
  margin-left: auto;
  margin-right: auto;
}
 .my-auto{
  margin-top: auto;
  margin-bottom: auto;
}
 .mx-0{
  margin-left: 0;
  margin-right: 0;
}
.text-center {
  text-align: center;
}
.overflow-visible{
  overflow: visible;
}
.h-5em{
  height: 4em;
}
.nav-bar{
 border-bottom: 1px solid #f0f0f0;
}
.nav-item{
  font-size: 1.2em;
  position: relative;
}
.nav-item a{
  color: #999;
}
.nav-item.active a{
  /* font-weight: bold; */
  color: #0848D5;
}
.nav-item a:hover{
  color: #0848D5 !important;
}

.nav-item.active::after{
  content:"";
  position: absolute;
  width: 100%;
  /* width: 50px; */
  height: 3px;
  bottom: 1px;
  left: 50%;
  transform: translateX(-50%);
  background: #0848D5;
}
.grid {
  display: grid;
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.font-bold{
  font-weight: 600;
}
.align-center{
  align-items: center;
}
.visible{
  overflow: visible;
}
.gap-25px{
  gap: 2.5rem;
}
.py-80px{
  padding-top: 8rem;
  padding-bottom: 8rem;
}
.py-60px{
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.py-40px{
  padding-top: 4rem;
  padding-bottom: 4rem;
}
.py-30px{
  padding-top: 3rem;
  padding-bottom: 3rem;
}
.pb-0px{
  padding-bottom: 0;
}
.pt-0px{
  padding-top: 0;
}

.mt-60px{
  margin-top: 6rem;
}
.mt-40px{
  margin-top: 4rem;
}
.mt-30px{
  margin-top: 3rem;
}
.mt-20px{
  margin-top: 2rem;
}
.mask1{
  background: url(/static/index/images/mask.png);
}
.part-container{

}
.part-container div{
  overflow: visible;
}
.container-name{
  font-size: 3.6rem;
  text-align: center;
  font-weight: 600;
  color: #0848D5; 
}
.container-sub-name{
  font-size: 1.6rem;
  text-align: center;
  color: #4B5563;
}
.title_line1{
  width: 55px;
  height: 5px;
  background: #0848D5;
}


@media screen and (max-width: 1440px) {
  .w-1440px {
    width: 100%;
    padding-left: 2rem;
    padding-right: 2rem;
  }
}
@media screen and (max-width: 1200px){
  .w-1200px,
  .w-1440px {
    width: 100%;
    padding-left: 2rem;
    padding-right: 2rem;
  }
  .grid-cols-3{
    grid-template-columns: repeat(2, 1fr);
  }
  .mask1,
  .mask2,
  .mask3,
  .mask4,
  .mask5
  .mask6,
  .mask7,
  .mask8{
    background-size: cover !important;
  }
}

@media screen and (max-width:768px) {
  html{
    font-size: 8px;
    padding-left: 8px;
    padding-right: 8px;
  }
  .nav_sticky_wrap{
    display: none;
  }
  .w-1200px,
  .w-1440px{
    width: 100%;
  }
  .grid-cols-3{
    grid-template-columns: repeat(1, 1fr);
  }
}