draw two same svg pics in homepage.

[chilly]

when I write mkdown as:

---

title: umlchart
date: 2017-06-12 13:41:12
tags: ['chart','uml','sequence']

This is flow

And This is seq

flow

st=>start: Start|past:>http://www.google.com[blank]
e=>end: End:>http://www.google.com
op1=>operation: My Operation|past
op2=>operation: Stuff|current
sub1=>subroutine: My Subroutine|invalid
cond=>condition: Yes
or No?|approved:>http://www.google.com
c2=>condition: Good idea|rejected
io=>inputoutput: catch something...|request

st->op1(right)->cond
cond(yes, right)->c2
cond(no)->sub1(left)->op1
c2(yes)->io->e
c2(no)->op2->e

When I use default hexo theme to generate static page.
This flowchart will draw two same svg pics on my homepage.
But when I click the post. There is only one pic left.

hexo version

hexo: 3.3.7
hexo-cli: 1.0.3
os: Darwin 16.4.0 darwin x64
http_parser: 2.7.0
node: 7.3.0
v8: 5.4.500.45
uv: 1.10.1
zlib: 1.2.8
ares: 1.10.1-DEV
modules: 51
openssl: 1.0.2j
icu: 58.1
unicode: 9.0
cldr: 30.0.2
tz: 2016g