b站搜索栏关键词屏蔽 by version4

/* ==UserStyle==
@name           www.bilibili.com - 2023/8/3 05:14:36
@namespace      github.com/openstyles/stylus
@version        1.0.0
@description    A new userstyle
@author         Me
==/UserStyle== */
@-moz-document domain("bilibili.com") {
    /* 在此插入代码... */
    input.nav-search-input::-webkit-input-placeholder {
        color: transparent !important
    }
    input.v-middle.nav-search-content::-webkit-input-placeholder {
        color: transparent !important
    }
    input.nav-search-keyword::-webkit-input-placeholder {
        color: transparent !important
    }
}