body{
    margin: 0;
    padding: 0;
    font-family: PingFangSC-Regular, sans-serif;
    letter-spacing: 0.04rem;
}
.head_box{
    width: 100%;
    background: #F3F3F3;
}
/*导航栏*/
.head_bar{
    background:white ;
    width: 100%;
    height: 44px;
    text-align: center;
    line-height: 44px;
}
.img{
    float: left;
    padding-top: 1rem;
    padding-left: 1.4285rem;
    width: 0.7142rem;
    height: 1.1428rem;
}
.title_a{
    display: inline-block;
    font-size: 2.2857rem;
    color: #333;
    font-weight: 545;
    text-decoration: none;
    cursor: pointer;
}