footer{
    margin-top: 50px;
}
section ul{
    width: 91%;
    margin: 0px auto;
    margin-top: 50px;
}
body{
    background: url(../images/wallpaper/wallpaper-bg.jpg) no-repeat;
    background-size: 100%;
    background-position: 0px 80px;
}
section ul li{
    overflow: hidden;
    float: left;
    width: 300px;
    height: 200px;
    margin: 5px 5px;
    border-radius: 5px; 
    cursor: pointer;
}
section ul li img{  
    height: 200px;
    transition: all .5s;
}
section ul li img:hover{  
    height: 200px;
    transform: scale(1.1);
}