注意该效果仅仅在小版图的模式下才有效果

首先我们找到网站根目录/usr/themes/handsome/libs/Content.php
将

<div class="panel-small single-post box-shadow-wrap-normal">
<div class="index-post-img-small post-feature index-img-small">
    <a href="{$parameterArray['linkUrl']}">
        <div class="item-thumb-small lazy">
        <img $img class="post-pic lazy"></div>
    </a>
</div>

替换为

<div class="panel-small single-post box-shadow-wrap-normal tt-small-blur">
<div class="index-post-img-small post-feature index-img-small tt-left-box">
    <a href="{$parameterArray['linkUrl']}">
        <div class="item-thumb-small lazy tt-left-img"><img $img class="post-pic lazy"></div>
    </a>
</div>
<div class="tt-blur-img"><img $img class="post-pic lazy"></div>

然后继续在 /usr/themes/handsome/libs/Content.php 找到下面的信息

//页脚部分，显示评论数、作者等信息
 $html .= <<<EOF
<div class="text-muted post-item-foot post-item-foot-icon text-ellipsis list-inline">
<li>
<span class="m-r-sm right-small-icons"><i data-feather="user"></i></span><a href="{$parameterArray['authorUrl']}">{$parameterArray['author']}</a></li>

<li><span class="right-small-icons m-r-sm"><i data-feather="clock"></i></span>{$dateString}</li>

替换为

//页脚部分，显示评论数、作者等信息
 $html .= <<<EOF
<div class="text-muted post-item-foot-icon text-ellipsis list-inline">
<li>
<span class="m-r-sm right-small-icons"><i data-feather="user"></i></span><a href="{$parameterArray['authorUrl']}">{$parameterArray['author']}</a></li>

<li><span class="right-small-icons m-r-sm"><i data-feather="clock"></i></span>{$dateString}</li>

并在自定义CSS里面添加以下代码

/* 头图显示斜切样式 */
.tt-small-blur{position:relative;z-index:1;display:flex;overflow:hidden;background-color:#333;color:#fff;}
.tt-small-blur .tt-left-box{z-index:1;-webkit-clip-path:polygon(0 0,94% 0,100% 100%,0 100%);clip-path:polygon(0 0,94% 0,100% 100%,0 100%);}
.tt-small-blur .tt-left-img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;}
.tt-small-blur .tt-blur-img{position:absolute;top:0;right:0;bottom:0;left:0;z-index:0;width:100%;height:100%;background-position:center;background-size:cover;transform:scale(1.4);-o-object-fit:cover;object-fit:cover;-webkit-filter:blur(1.275rem) brightness(.83);filter:blur(1.275rem) brightness(.83);}
.tt-small-blur .post-meta{z-index:1;display:flex;color:inherit;flex-direction:column;justify-content:space-between;}
.tt-small-blur .text-title{color:inherit;}
.tt-small-blur .post-meta h2,.tt-small-blur .post-meta p{text-shadow:.1875rem .1875rem .3125rem #333;letter-spacing:.09rem;}
.tt-small-blur .text-muted{color:inherit;}
.tt-small-blur .post-meta {padding: 30px 30px 15px 30px;}
@media (max-width:500px){.tt-small-blur .index-post-title{display:-webkit-box;display:-moz-box;overflow:hidden;margin-bottom:2px;height:48px;text-overflow:ellipsis;white-space:normal;word-wrap:break-word;line-height:1.4;-webkit-line-clamp:2;-webkit-box-orient:vertical;-moz-line-clamp:2;-moz-box-orient:vertical;word-break:break-all;}}
@media (max-width:500px){.tt-small-blur .summary{display:none;}}
@media (max-width:380px){.tt-small-blur .post-meta{padding:10px 15px;}}
@media (min-width:768px) and (max-width: 1199px){.tt-small-blur .summary {height: 55px;}.tt-small-blur .line-lg {margin-top: 1px;margin-bottom: 1px;}}