.bottom_nav{

}
.bn_item{
    float:left;
    width:20%;
}
.bn_item a{
    display: flex;
    flex-direction: column;
    align-items: center;
    padding:3px 0;
}
.b_nav_pic{
    width:30px;
    height:30px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.b_nav_pic img{
    transform: scale(0.55);
}
.b_nav_pic img:first-child{display: none}
.bn_item p{
    font-size:15px;
    color:#000;
}
.bn_item:nth-child(3)>a>img{
    width: 64px;
    position: relative;
    top: -18px;}
.bn_item:nth-child(3)>a>p{
    position: relative;
    top: -45px;
    color: #fff;}