原版是macgf大佬的，房东家的猫是二开的功能，此版代码为初一提供：优化了后台设置前缀的显示样式，文字和图标可以自选。本来说是初一自己发的，也没法我就自己发得了。

前后台截图

代码

代码放在functions.php下或func.php

CSS代码

.DearLicy_prefix{
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    border-radius: 5px;
    padding: 5px 4px;
    margin-right: 3px;
    height: 19px;
    font-size: 12px;
    top: -3px;
    clip-path: polygon(7% 0, 99% 0, 93% 100%, 0 100%);
}
.DearLicy_prefix:after, .DearLicy_prefix:after {
    position: absolute;
    content: " ";
    display: block;
    left: -100%;
    top: -5px;
    width: 15px;
    height: 145%;
    background-image: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0));
    animation: sweepTitle 3s ease-in-out infinite;
    transform: rotate(28deg);
}
@keyframes sweepTitle {
    0% {
        left: -100%
    }

    100% {
        left: 100%
    }
}