.container {
    margin: 0 auto;
    width: 1080px;
    }

 #header {
    height: 100px;
    /* background-color: rgb(253, 253, 253); */
    }

#logo{
    width: 164;
    height:44px;     
}
.nav{
    font-size: 23px;
    font-weight: bold;
    line-height: 60px;
    margin-left: 200px;
}
.nav li{
    float: left;
    margin-left: 55px;   
}
.nav a{
    color:rgb(73, 73, 73);   
}
.slider{
    width: 120px;
    height: 55px;
    background-color: rgb(206, 230, 240);
    border-radius: 10px;
    position: absolute;
    margin-left: 582px;
    
    z-index: -1;
    transition: all ease,0.3s;
}
li:nth-child(1):hover ~ .slider{
    margin-left:25px ;
}
li:nth-child(2):hover ~ .slider{
    margin-left:143px ;
}
li:nth-child(3):hover ~ .slider{
    margin-left:288px ;
}
li:nth-child(4):hover ~ .slider{
    margin-left:436px ;
}
li:nth-child(5):hover ~ .slider{
    margin-left:582px ;
}
li:nth-child(6):hover ~ .slider{
    margin-left:729px ;
}



.head img{
    width: 1080px;
    height: 300px;
}

#footer{
    overflow: hidden;
    /*background-color:greenyellow;*/
    width: 1080px;
    height: 100px;
}
.footer-1{
    background-color: rgb(97, 107, 245);
    width: 1080px;
    height: 40px;
    margin-top: 20px;
}
.bottom_nav{ 
    float:right;
    margin-top: 15px;
}
.copyright{
    clear:both;
    margin-top: 10px;
    width:1080px; 
    text-align:center; 
    color:#333;
    position: absolute;
}