1. Masuk ke → Menu Blogger.
2. Pilih → TemaEdit HTML.
3. Untuk mempermudah pecarian tekan tomol Ctrl + F.
4. Cari kode ini  ]]></b:skin>

5. Kemudian Copy → Paste kode di bawah ini di atas kode ]]></b:skin>
   /* Kotak Script sharemoo.blogspot.com */
.post-body pre{border-left:5px solid var(--color-main); padding:0;margin:.5em auto;white-space:pre;word-wrap:break-word;overflow:auto;background-color:#292E34;position:relative;width:100%;-moz-tab-size:2;-o-tab-size:2;tab-size:2;word-break:normal; user-select:text; -webkit-user-select:text; -khtml-user-select:text; -moz-user-select:text; -ms-user-select:text; user-select:text;-webkit-hyphens:none;-moz-hyphens:none;-ms-hyphens:none;hyphens:none}
.post-body pre.html:before, .post-body pre.css:before, .post-body pre.javascript:before, .post-body pre.jquery:before {display: block; background-color:#4286f4; padding:5px 35px; font-weight:500; font-size:16px; font-family:Google Sans, -apple-system,BlinkMacSystemFont,"Roboto","Segoe UI","Oxygen-Sans","Ubuntu","Cantarell","Helvetica Neue",sans-serif; background-repeat:no-repeat; background-size:20px 20px; background-position-x:7px; background-position-y:center;}
.post-body pre.html:before {content:'HTML'; background-image:url("data:image/svg+xml,<svg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'><path d='M12,17.56L16.07,16.43L16.62,10.33H9.38L9.2,8.3H16.8L17,6.31H7L7.56,12.32H14.45L14.22,14.9L12,15.5L9.78,14.9L9.64,13.24H7.64L7.93,16.43L12,17.56M4.07,3H19.93L18.5,19.2L12,21L5.5,19.2L4.07,3Z' fill='%231d2129'></path></svg>");}
.post-body pre.css:before {content:'CSS'; background-image:url("data:image/svg+xml,<svg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'><path d='M5,3L4.35,6.34H17.94L17.5,8.5H3.92L3.26,11.83H16.85L16.09,15.64L10.61,17.45L5.86,15.64L6.19,14H2.85L2.06,18L9.91,21L18.96,18L20.16,11.97L20.4,10.76L21.94,3H5Z' fill='%231d2129'></path></svg>");}
.post-body pre.javascript:before {content:'Javascript'; background-image:url("data:image/svg+xml,<svg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'><path d='M3,3H21V21H3V3M7.73,18.04C8.13,18.89 8.92,19.59 10.27,19.59C11.77,19.59 12.8,18.79 12.8,17.04V11.26H11.1V17C11.1,17.86 10.75,18.08 10.2,18.08C9.62,18.08 9.38,17.68 9.11,17.21L7.73,18.04M13.71,17.86C14.21,18.84 15.22,19.59 16.8,19.59C18.4,19.59 19.6,18.76 19.6,17.23C19.6,15.82 18.79,15.19 17.35,14.57L16.93,14.39C16.2,14.08 15.89,13.87 15.89,13.37C15.89,12.96 16.2,12.64 16.7,12.64C17.18,12.64 17.5,12.85 17.79,13.37L19.1,12.5C18.55,11.54 17.77,11.17 16.7,11.17C15.19,11.17 14.22,12.13 14.22,13.4C14.22,14.78 15.03,15.43 16.25,15.95L16.67,16.13C17.45,16.47 17.91,16.68 17.91,17.26C17.91,17.74 17.46,18.09 16.76,18.09C15.93,18.09 15.45,17.66 15.09,17.06L13.71,17.86Z' fill='%231d2129'></path></svg>");}
.post-body pre.jquery:before {content:'Click 2x To Select All'; background-image:url("data:image/svg+xml,<svg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'><path d='M22.88,10.41C20.77,12.18 17.61,11.9 15.84,9.79C14.06,7.67 14.34,4.5 16.45,2.75L16.96,2.37C15.27,4.19 15.16,7.03 16.8,9C18.43,10.94 21.25,11.32 23.34,9.97L22.88,10.41M21.1,14.5C17.93,17.17 13.2,16.76 10.54,13.58C7.87,10.41 8.29,5.68 11.46,3L12.38,2.36C9.96,5.09 9.84,9.26 12.26,12.14C14.68,15 18.8,15.63 21.91,13.72L21.1,14.5M19.97,19.38C15.53,23.11 8.9,22.53 5.17,18.08C1.45,13.64 2.03,7 6.47,3.29L7.58,2.5C4.07,6.3 3.85,12.23 7.28,16.32C10.71,20.4 16.59,21.22 20.96,18.43L19.97,19.38Z' fill='%231d2129'></path></svg>");}
.post-body pre::-webkit-scrollbar,pre::-moz-scrollbar,pre code::-webkit-scrollbar,pre code::-moz-scrollbar,code::-webkit-scrollbar,code::-moz-scrollbar{display:none} .post-body pre code{line-height:1.5em;display:block;background:none;border:none;color:#ffffff;padding:10px 15px; font-size:12px;white-space:pre;overflow:auto;max-height:250px; user-select:text; -webkit-user-select:text; -khtml-user-select:text; -moz-user-select:text; -ms-user-select:text; user-select:text;} pre mark,code mark,pre code mark{background-color:#95b2f6 !important;color:#292E34 !important;padding:0px;margin:0px} .post-body code {user-select:text; -webkit-user-select:text; -khtml-user-select:text; -moz-user-select:text; -ms-user-select:text; user-select:text;} .post-body code.tutor {color:#f44336; letter-spacing:-0.3px} post-body quote{border-left:5px solid var(--color-main); user-select:text; -webkit-user-select:text; -khtml-user-select:text; -moz-user-select:text; -ms-user-select:text; user-select:text; padding:0;margin:.5em auto;white-space:pre;word-wrap:break-word;overflow:auto;background-color:#292E34;position:relative;width:100%;-moz-tab-size:2;-o-tab-size:2; tab-size:2; word-break:normal; -webkit-hyphens:none; -moz-hyphens:none; -ms-hyphens:none; hyphens:none}
one; -moz-hyphens:none; -ms-hyphens:none; hyphens:none}   
6. Save Template.
7. Buat Postingan baru atau Edit Postingan lama dan masuk ke Mode HTML bukan Compose.
8. CopyPaste kan kode di bawah ini di dalam postingan Mode HTML bukan Compose.
 <pre class="javascript"><code> KODE SCRIPT </span></code></pre>
<pre class="html"><code> KODE SCRIPT </span></code></pre>
<pre class="css"><code> KODE SCRIPT </span></code></pre>
<pre class="jquery"><code> KODE SCRIPT </span></code></pre>

Untuk kode box tanpa judul gunakan script dibawah ini
<pre><code> KODE SCRIPT </span></code></pre>   
9. Terbitkan Postingan dan lihat hasilnya.
10. Selesai.
Semoga Bermanfaat