Haproxy configuration problem-CodePudding

My haproxy configuration files as follows, but found that site jump, sometimes successfully, sometimes can't open the page, sometimes pages show only the part, all the images such as the page to show not to come out, help me to see if my profile write wrong

 
Global 
Chroot/var/lib/haproxy 
Pidfile/var/run/haproxy pid 
The user haproxy 
Group haproxy 
The daemon 
Maxconn 4000 
The log 127.0.0.1 local3 info 

Defaults 
# mode HTTP 
The log global 
# option httplog 
Option dontlognull 
Retries 3 
The timeout HTTP - request 5 s 
The timeout queue 1 m 
The timeout connect 5 s 
The timeout client 1 m 
The timeout server 1 m 
Timeout HTTP -- keep alive 5 s 
The timeout check 5 s 
Maxconn 3000 

Listen port_80 
The bind * : 80 
Mode HTTP 
Option httplog 
Use the -server svr1 if {hdr_dom (host) - I svr1.domain.com} 
Check server svr1 192.168.0.17-80 
Use the -server svr2 if {hdr_dom (host) - I svr2.domain.com} 
Check server svr2 192.168.0.18-80 
Use the -server svr3 if {hdr_dom (host) - I svr3.domain.com} 
Check server svr3 192.168.0.19-10086 
Use the -server an svr4 if {hdr_dom (host) - I svr4.domain.com} 
80 check server an svr4 192.168.0.20: