Removing CSS from theme options doesn't alter the display

Hello,

I have made a few changes by adding certain CSS in theme options and it worked fine. Now , I removed those CSS but I doesn’t work the way it should. Despite removing the CSS it works as if there is CSS still available in theme options.

Please let me know is do something wrong here. This was the content that I had.

@media (max-width: 767px){
.products .kad_product {
width: 50%;
float: left;
}
}
@media (max-width: 480px){
.product_item .product_details h5 {
min-height: 100px;
}
}

@media (max-width: 767px){
.home .home-iconmenu {
width:50%;
float:left;
}
.homeitemcount3{
clear:left
}
}

Regards,
Muthu