.top-nav {
    position: fixed;
  
    top: -66px;
  
    left: 0;
  
    width: 100vw;
  
    height: 68px;
  
    background: url('https://cdn.fonepaw.com/landing-page/top-nav-pc.png') no-repeat top left;
  
    background-size: 100% 100%;
  
    transition: all 0.3s;
  
    z-index: 10000;
  }
  
.top-nav .content {
    display: flex;

    align-items: center;

    justify-content: space-between;

    width: 835px;

    height: 62px;

    margin-left: calc(50% - 255px);
}

.top-nav .content .product-info {
    display: flex;

    align-items: center;
}

.top-nav .content .product-info .title {
    font-weight: 700;

    font-size: 20px;

    line-height: 29px;

    color: #5950da;

    margin-left: 20px;
}

.top-nav .content .action-box .btn-box {
    display: flex;

    align-items: center;
}

.top-nav .content .action-box .btn-box .btn {
    box-sizing: border-box;

    height: 40px;

    display: inline-flex;

    align-items: center;

    border-radius: 6px;

    margin-left: 20px;

    padding: 0 20px;
}

.top-nav .content .action-box .btn-box .btn span {
    margin-left: 10px;

    transition: all 0.3s;
}

.top-nav .content .action-box .btn-box .btn:hover span {
    color: #000000;
}

.top-nav .content .action-box .btn-box .buy {
    border: 1px solid #5950da;
}

.top-nav .content .action-box .btn-box .buy span {
    font-weight: 400;

    font-size: 14.9132px;

    line-height: 18px;

    color: #5950da;
}

.top-nav .content .action-box .btn-box .download {
    background: #5950da;
}

.top-nav .content .action-box .btn-box .download span {
    font-weight: 400;

    font-size: 14.9132px;

    line-height: 18px;

    color: #ffffff;
}

.top-nav .content .action-box .mac-box {
    display: none;
}

.top-nav-fixed {
    top: -2px;
}
#guides-detail .article .news a.author-title{color: #337ab7;}
#guides-detail .article{margin-top: 50px;}
@media screen and (max-width: 770px) {
    .top-nav {
        position: fixed;
    
        top: -159px;
    
        left: 0;
    
        width: 100vw;
    
        height: auto;
    
        background: url('https://cdn.fonepaw.com/landing-page/top-nav-mb.png') no-repeat top left;
    
        background-size: 100% 100%;
    
        transition: all 0.5s;
    
        z-index: 10000;
    }

    .top-nav .content {
        flex-direction: column;

        justify-content: center;

        width: 90%;

        height: auto;

        margin: 0 auto;
    }

    .top-nav .content .product-info {
        display: flex;

        align-items: center;
    }

    .top-nav .content .product-info .title {
        font-size: 20px;

        line-height: 29px;

        margin-left: 20px;
    }

    .top-nav .content .action-box {
        margin: 20px 0;
    }

    .top-nav .content .action-box .btn-box .btn {
        height: 40px;

        border-radius: 6px;

        padding: 0 20px;

        margin: 0 10px;
    }

    .top-nav .content .action-box .btn-box .btn span {
        margin-left: 10px;
    }

    .top-nav .content .action-box .btn-box .buy {
        border: 1px solid #5950da;
    }

    .top-nav .content .action-box .btn-box .buy span {
        font-size: 14px;

        line-height: 18px;
    }

    .top-nav .content .action-box .btn-box .download span {
        font-size: 14px;

        line-height: 18px;
    }

    .top-nav .content .action-box .mac-box {
        display: none;
    }

    .top-nav-fixed {
        top: -2px;
    }
}