Help Http Mangel

I am beginner in Mikrotik …
I want to make traffic limitation for http port 80 , I make simple queue but I am facing problem when the limit is full and will be no connection between server and clients ,
I want to make traffic limit for http in this case the rest connection will work fine ,
I have 2 cards real and Clients and I set 128K as limit for target ip in simple queue ,

what I want to do is keep 128K for every ip this subnet 10.0.1.0/24 and make limit for http about 90K

128K-90K = 38K for rest connection in this case if some one make download and use all http traffic it will not disconnect from the server and have big delay also .

thank you hope to help me