body {  
    /*background summer*/
    background: #F0ECE9 url(../../img/background/bg-summer.jpg) center 0% no-repeat;
}

@media (max-width: 989px) {
    body{
        background: #F0ECE9 url(../../img/background/bg-summer-max989.jpg) center 0% no-repeat;
    }
}

@media (max-width: 659px) {
    body{
        background: #F0ECE9 url(../../img/background/bg-summer-max659.jpg) center 0% no-repeat; 
    }
}