.navindex1 {
    padding: 0 6.6rem;
}
  
  .jindu{
    position: absolute;
    left: 0;
    top: 0;
    height: 4px;
    background: #e62129;
    width: 50%;
    animation: jindutiao 3s linear ;
  }
  @-webkit-keyframes jindutiao {
   0% {
    width:7.8rem;
  }
   100% {
    width: 50%;
  
  }
  }
  @media (max-width: 992px){
    
    .navindex1 {
      padding: 0;
    }
    .jindu {
      position: absolute;
      left: 0;
      top: 0;
      height: 4px;
      background: #e62129;
      width: 50%;
      animation: jindutiao 3s linear;
    }
    @-webkit-keyframes jindutiao {
      0% {
       width:21%;
     }
      100% {
       width: 50%;
     
     }
     }
   
    }