.ze-prank{
    display: none;
}
.ze-prank.watermark{
    display: block;;
}
.ze-prank.watermark:before {
    display: block;
    position: fixed;
    right: 20px;
    bottom: 20px;
    color: grey;
    opacity: 0.5;
    font-size: 14px;
    white-space: pre;
    z-index: 999;
}
@media (min-width: 640px){
    .ze-prank.watermark:before {
        font-size: 20px;
    }
}
.ze-prank.Windows:before {
    content: '\6fc0\6d3b Windows\A\8f6c\5230\201c\8bbe\7f6e\201d\4ee5\6fc0\6d3b Windows ';
}
.ze-prank.macOS:before {
    content: '\6fc0\6d3b macOS\A\8f6c\5230\201c\8bbe\7f6e\201d\4ee5\6fc0\6d3b macOS ';
}
.ze-prank.Linux:before {
    content: '\6fc0\6d3b Linux\A\8f6c\5230\201c\8bbe\7f6e\201d\4ee5\6fc0\6d3b Linux ';
}
.ze-prank.Android:before {
    content: '\6fc0\6d3b Android\A\8f6c\5230\201c\8bbe\7f6e\201d\4ee5\6fc0\6d3b Android ';
}
.ze-prank.iPadOS:before {
    content: '\6fc0\6d3b iPadOS\A\8f6c\5230\201c\8bbe\7f6e\201d\4ee5\6fc0\6d3b iPadOS ';
}
.ze-prank.iOS:before {
    content: '\6fc0\6d3b iOS\A\8f6c\5230\201c\8bbe\7f6e\201d\4ee5\6fc0\6d3b iOS ';
}

.ze-prank.OS:before {
    content: '\6fc0\6d3b OS\A\8f6c\5230\201c\8bbe\7f6e\201d\4ee5\6fc0\6d3b OS ';
}