*{
  padding: 0;
  margin: 0;
}
body{
  overflow-x: hidden;
}
::-webkit-scrollbar {
  /*滚动条整体样式*/
  width : 6px;  /*高宽分别对应横竖滚动条的尺寸*/
  height: 8px;
  }
  ::-webkit-scrollbar-thumb {
    border-radius: 10px;
    box-shadow: inset 0 0 5px rgb(0 0 0 / 20%);
    background   : rgb(178,178,178);;
    }
    ::-webkit-scrollbar-thumb:hover {
      background   : rgb(127,127,127);
      }

    ::-webkit-scrollbar-track {
     /* box-shadow   : inset 0 0 5px rgba(0, 0, 0, 0.2);
       border-radius: 10px;
     background   : #ededed; */
      opacity: 0;
      width: 0;

 }

#app{
  width: 100%;
  margin: 0 auto;
}
.heardView{
  width: 100%;
  background-color: #fff;
  z-index: 999;
  position: fixed;
  top: 0;
  box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1)
}
.heard{
  width: 75rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 5.25rem;
  background-color: #fff;
}

.iconImg{
  width: 14.5625rem;
  height: 5rem;
  margin-left: -3.125rem;
}
.heard__ul{
  display: flex;
  align-items: center;
  height: 100%;
  width: 44rem;
 margin-left: 4.75rem;
}
.heard__ul li{
  list-style:none;
  height: 100%;
  white-space: normal;
  line-height: 5.25rem;
  display: inline-block;
  cursor: pointer;
  padding: 0px 1.5625rem;
  font-size: 1.125rem;
}
.heard__ul li:hover{
  color: #18A0FB;
   background: #F4F4F4;
}
.active{
   color: #18A0FB;
   background: #F4F4F4;
}
.heard__signUp{
  margin-left: 5.5rem;
  width: 8.125rem;
  height: 2.5rem;
  background: #18A0FB;
  border-radius: 5px;
  font-size: 1.125rem;
  text-align: center;
  line-height: 2.5rem;
  color: #fff;
  cursor: pointer;
}
/* @media  screen and (min-width:1600px) and (max-width:1920px) {
  .heard{
    width: 100rem;
    
  }
  .iconImg{
    margin-left: 7.5rem;
  }
  .heard__ul{
    margin-left: 179px !important;
    width: 43rem !important;
  }
  
}
@media  screen and (max-width:1200px){
  .heard__ul{
    width: 40rem;
  }
  .heard__signUp{
    margin-left: 50px;
  }
  .introduction__text{
    width: 62.5rem;
  }
  .signup__icon__item{
    width: 50%;
  }
  .signup__icon{
    width: 1000px;
    flex-wrap: wrap;
    padding-bottom: 120px;
  }
  .signup {
    margin: 0 auto;
  }
 .signup__entrance{
   /* display: none; 
 }
  .signup{
    height: auto;
  }
  .dynamic__list{
    display: flex;
    justify-content: center;
  }
  .dynamic__list__left{

  }
  .introduce{
    width: 1000px;
  }
  .dynamic__item__left{
    width: 600px;
  }
} */