@media only screen and (min-width: 1000px) and (max-width: 1366px)
{
    .slider {
        margin-left: 90px;
        margin-right: 90px;
    }
}
@media only screen and (min-width: 0px) and (max-width: 1000px)
{
    .slider {
        margin-left: 60px;
        margin-right: 60px;
    }
}