.head{
    width: 100%;
    height: 80px;
    box-shadow: 0 0 10px #666;
    position: relative;
}
.head:hover{
    animation: mm 1.5s cubic-bezier(0,0,0,0) 10 alternate;
}
@keyframes mm{
    from{box-shadow: 0 0 10px #666;}
    to{box-shadow: 0 0 200px #666;}
}
.head-middle{
    height: 100%;
    padding: 0;
}
.head-middle ul{
    margin: 0;
    padding: 0;
}
.head-middle ul li{
    height: 100%;
    list-style: none;
    padding: 0;
    display: block;
    float: left;
}

.head-middle ul li a{
    font-size: 1.2em;
    line-height: 80px;
    padding: 0 20px;
    color: #000;
    text-decoration: none;
}
.head-middle ul .logo{
    height: 80px;
    overflow: hidden;
    text-align: left;
    margin-left: -10px;
}
.logo a{
    display: inline-block;
    height: 60px;
}
.logo a img {
    height: 100%;
}
.head-middle ul li a:hover{
    color: #EC971F;
}
.head-text{
    margin-left: 50px;
}
.bottom{
    width: 100%;
    height: 100px;
    clear: both;
    position: relative;
    text-align: center;
}
.bottom-middle{
    text-align: center;
}
.bottom-middle p{
    margin-top: 25px;
}

@media only screen and (max-width: 600px) {
    .head-middle ul li a{
        padding: 0 5px;
    }
    .editionBtnBox,.qrCode{
        text-align: center;
    }
    .index-content{
        margin-top: 0;
    }
    .index-content-left h1{
        text-align: center;
        font-size: 2em;
    }
    .head-middle ul .logo{
        margin-left: 0px;
    }

}
.item img {
    width: 100%;
}