Support for bridge theme

Hi Support

Is it possible to make wp-property compatible with bridge theme? I have to delete the following CSS after every update:

.clearfix:after {
clear: both;
content: “.”;
display: block;
height: 0;
line-height: 0;
visibility: hidden;
}
.clearfix {
display: inline-block;
}
html[xmlns] .clearfix {
display: block;
}
* html .clearfix {
height: 1%;
}

this is the only thing which is not compatible with it. just for that a child theme… no ??

Best