/*logo样式控制与功能实现*/
    .logo-switcher-container{
      display: flex;
      position:relative;
      justify-content: center;
      align-items: center;
      width: 130px;
      height: 70px;
      cursor: pointer;
      left: 0px !important;
    }
    .navbar-logo{
      position:absolute;
      object-fit: contain;
      transition: opacity 0.3s ease-in-out;
    }
    .logo-switcher-container a{
      width: 100%;
      height: 100%;
      position: absolute;

    }
    #nav_default_logo{
      opacity: 1 !important;
      width: 100%;
      top: 50%;
      left: 50%;
      transform: translate(-50%,-50%);
    }
    #nav_hover_logo{
      opacity: 0 !important;
      height: 80%;
      top: 50%;
      left: 50%;
      transform: translate(-50%,-50%);
    }
    .logo-switcher-container:hover #nav_hover_logo{
      opacity: 1 !important
    }
    .logo-switcher-container:hover #nav_default_logo{
      opacity: 0 !important;
    }