crash with bootstrap css material design

[gendhenk]

Hello sir
please help me
error crash blak icon if I using css bootstrap-material-design
url : https://github.com/FezVrasta/bootstrap-material-design
<link rel="stylesheet" type="text/css" href="dist/css/bootstrap-material-design.css">
blank icon ion-close-round if click mouse
![snapshot_160415_102803](https://cloud.githubusercontent.com/assets/10189226/14550707/2a6ec6fc-02f5-11e6-90eb-23c26da37af6.png)