Bind:-
bind "shift" "+speed;r_cleardecals";
bind "w" "+forward;r_cleardecals";
bind "a" "+moveleft;r_cleardecals";
bind "d" "+moveright;r_cleardecals";
bind "s" "+back;r_cleardecals";
bind "MOUSE1" "+attack;r_cleardecals";
bind "TAB" "+score;r_cleardecals"

crosshairs:-
cl_crosshair_drawoutline 1;cl_crosshair_outlinethickness 1;cl_crosshaircolor 1;cl_crosshairdot 0;cl_crosshairgap -2;cl_crosshairsize 3;cl_crosshairstyle 4;cl_crosshairthickness 1