我需要一个紫色重的复选标记，但我只在这里找到白色重磅标记： http://www.w3schools.com/charsets/ref_utf_dingbats.asp 我尝试用紫色着色，但收到紫色边框白色重的复选标记。 我怎么能把这个复选标记全部填上紫色？
答案 0 :(得分：1)
将CHECK MARK包装在span标签内，并在此标签上应用Building native extensions. This could take a while...
ERROR: Error installing json:
ERROR: Failed to build gem native extension.
/home/user/.rvm/rubies/ruby/bin/ruby -r ./siteconf20150611-1112-jqgxzj.rb extconf.rb
creating Makefile
make "DESTDIR=" clean
make "DESTDIR="
compiling generator.c
linking shared-object json/ext/generator.so
/usr/bin/ld: cannot find -lgmp
collect2: error: ld returned 1 exit status
make: *** [generator.so] Error 1
make failed, exit code 2
例如：
sudo apt-get install libgmp-dev
color: purple