前言

本文将介绍如何添加tag外挂标签样式
教程链接：Hexo博客搭建与美化教程 | 卓越科技的Blog (zykj.js.org)
样式展示链接基于 Butterfly 主题魔改的样式查阅这里仅包括：自定义标签、文本段落、复选框、富文本按钮、 Folding、密码样式的文本、时间线、 Link。
操作

在themes\Butterfly\source\css路径下创建tag.css文件，并写入以下内容：
span.btn {
  display: inline;
}

span.btn > a {
  display: inline-block;
  background: #2196f3;
  color: #fff;
  padding: 4px 4px 2px 4px;
  margin: 2px;
  line-height: 1.1;
  border-radius: 2px;
  transition: all 0.28s ease;
  -moz-transition: all 0.28s ease;
  -webkit-transition: all 0.28s ease;
  -o-transition: all 0.28s ease;
}

span.btn > a i {
  margin-right: 2px;
}

span.btn > a:hover {
  color: #fff;
  background: #ff5722;
}

span.btn > a:not([href]) {
  opacity: 0.5;
}

span.btn > a:not([href]):hover {
  cursor: not-allowed;
}

span.btn.regular > a {
  padding: 8px 12px 6px 12px;
}

span.btn.regular > a i {
  margin-right: 4px;
}

span.btn.large > a {
  padding: 12px 36px 10px 36px;
}

span.btn.large > a i {
  margin-right: 8px;
}

span.btn.center {
  display: block;
  text-align: center;
}

[data-theme="dark"] div.btns {
  filter: brightness(0.7);
}

[data-theme="dark"] div.btns a {
  background: 0 0;
}

div.btns {
  margin: 0 -8px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  overflow: visible;
  line-height: 1.8;
}

div.btns,
div.btns p,
div.btns a {
  font-size: 0.8125rem;
  color: #555;
}

div.btns b {
  font-size: 0.875rem;
}

div.btns.wide > a {
  padding-left: 32px;
  padding-right: 32px;
}

div.btns.fill > a {
  flex-grow: 1;
  width: auto;
}

div.btns.around {
  justify-content: space-around;
}

div.btns.center {
  justify-content: center;
}

div.btns.grid2 > a {
  width: calc(100% / 2 - 16px);
}

@media screen and (max-width: 1024px) {
  div.btns.grid2 > a {
	width: calc(100% / 2 - 16px);
  }
}

@media screen and (max-width: 768px) {
  div.btns.grid2 > a {
	width: calc(100% / 2 - 16px);
  }
}

@media screen and (max-width: 500px) {
  div.btns.grid2 > a {
	width: calc(100% / 1 - 16px);
  }
}

div.btns.grid3 > a {
  width: calc(100% / 3 - 16px);
}

@media screen and (max-width: 1024px) {
  div.btns.grid3 > a {
	width: calc(100% / 3 - 16px);
  }
}

@media screen and (max-width: 768px) {
  div.btns.grid3 > a {
	width: calc(100% / 3 - 16px);
  }
}

@media screen and (max-width: 500px) {
  div.btns.grid3 > a {
	width: calc(100% / 1 - 16px);
  }
}

div.btns.grid4 > a {
  width: calc(100% / 4 - 16px);
}

@media screen and (max-width: 1024px) {
  div.btns.grid4 > a {
	width: calc(100% / 3 - 16px);
  }
}

@media screen and (max-width: 768px) {
  div.btns.grid4 > a {
	width: calc(100% / 3 - 16px);
  }
}

@media screen and (max-width: 500px) {
  div.btns.grid4 > a {
	width: calc(100% / 2 - 16px);
  }
}

div.btns.grid5 > a {
  width: calc(100% / 5 - 16px);
}

@media screen and (max-width: 1024px) {
  div.btns.grid5 > a {
	width: calc(100% / 4 - 16px);
  }
}

@media screen and (max-width: 768px) {
  div.btns.grid5 > a {
	width: calc(100% / 3 - 16px);
  }
}

@media screen and (max-width: 500px) {
  div.btns.grid5 > a {
	width: calc(100% / 2 - 16px);
  }
}

div.btns a {
  transition: all 0.28s ease;
  -moz-transition: all 0.28s ease;
  -webkit-transition: all 0.28s ease;
  -o-transition: all 0.28s ease;
  margin: 8px;
  margin-top: calc(1.25 * 16px + 32px);
  min-width: 120px;
  font-weight: bold;
  display: flex;
  justify-content: flex-start;
  align-content: center;
  align-items: center;
  flex-direction: column;
  padding: 8px;
  text-align: center;
  background: #f6f6f6;
  border-radius: 4px;
}

div.btns a > img:first-child,
div.btns a > i:first-child {
  transition: all 0.28s ease;
  -moz-transition: all 0.28s ease;
  -webkit-transition: all 0.28s ease;
  -o-transition: all 0.28s ease;
  height: 64px;
  width: 64px;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.1);
  margin: 16px 8px 4px 8px;
  margin-top: calc(-1.25 * 16px - 32px);
  border: 2px solid #fff;
  background: #fff;
  line-height: 60px;
  font-size: 28px;
}

div.btns a > img:first-child.auto,
div.btns a > i:first-child.auto {
  width: auto;
}

div.btns a > i:first-child {
  color: #fff;
  background: #2196f3;
}

div.btns a p,
div.btns a b {
  margin: 0.25em;
  font-weight: normal;
  line-height: 1.25;
  word-wrap: break-word;
}

div.btns a b {
  font-weight: bold;
  line-height: 1.3;
}

div.btns a img {
  margin: 0.4em auto;
}

div.btns a:not([href]) {
  cursor: default;
  color: inherit;
}

div.btns a[href]:hover {
  background: rgba(255, 87, 34, 0.15);
}

div.btns a[href]:hover,
div.btns a[href]:hover b {
  color: #ff5722;
}

div.btns a[href]:hover > img:first-child,
div.btns a[href]:hover > i:first-child {
  transform: scale(1.1) translateY(-8px);
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

div.btns a[href]:hover > i:first-child {
  background: #ff5722;
}

div.btns.circle a > img:first-child,
div.btns.circle a > i:first-child {
  border-radius: 32px;
}

div.btns.rounded a > img:first-child,
div.btns.rounded a > i:first-child {
  border-radius: 16px;
}

[data-theme="dark"] .checkbox {
  filter: brightness(0.7);
}

.checkbox {
  display: flex;
  align-items: center;
}

.checkbox input {
  -webkit-appearance: none;
  -moz-appearance: none;
  -ms-appearance: none;
  -o-appearance: none;
  appearance: none;
  position: relative;
  height: 16px;
  width: 16px;
  transition: all 0.15s ease-out 0s;
  cursor: pointer;
  display: inline-block;
  outline: none;
  border-radius: 2px;
  flex-shrink: 0;
  margin-right: 8px;
}

.checkbox input[type="checkbox"]:before,
.checkbox input[type="checkbox"]:after {
  position: absolute;
  content: "";
  background: #fff;
}

.checkbox input[type="checkbox"]:before {
  left: 1px;
  top: 5px;
  width: 0;
  height: 2px;
  transition: all 0.2s ease-in;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
}

.checkbox input[type="checkbox"]:after {
  right: 7px;
  bottom: 3px;
  width: 2px;
  height: 0;
  transition: all 0.2s ease-out;
  transform: rotate(40deg);
  -webkit-transform: rotate(40deg);
  -moz-transform: rotate(40deg);
  -ms-transform: rotate(40deg);
  -o-transform: rotate(40deg);
  transition-delay: 0.25s;
}

.checkbox input[type="checkbox"]:checked:before {
  left: 0;
  top: 7px;
  width: 6px;
  height: 2px;
}

.checkbox input[type="checkbox"]:checked:after {
  right: 3px;
  bottom: 1px;
  width: 2px;
  height: 10px;
}

.checkbox.minus input[type="checkbox"]:before {
  transform: rotate(0);
  left: 1px;
  top: 5px;
  width: 0;
  height: 2px;
}

.checkbox.minus input[type="checkbox"]:after {
  transform: rotate(0);
  left: 1px;
  top: 5px;
  width: 0;
  height: 2px;
}

.checkbox.minus input[type="checkbox"]:checked:before {
  left: 1px;
  top: 5px;
  width: 10px;
  height: 2px;
}

.checkbox.minus input[type="checkbox"]:checked:after {
  left: 1px;
  top: 5px;
  width: 10px;
  height: 2px;
}

.checkbox.plus input[type="checkbox"]:before {
  transform: rotate(0);
  left: 1px;
  top: 5px;
  width: 0;
  height: 2px;
}

.checkbox.plus input[type="checkbox"]:after {
  transform: rotate(0);
  left: 5px;
  top: 1px;
  width: 2px;
  height: 0;
}

.checkbox.plus input[type="checkbox"]:checked:before {
  left: 1px;
  top: 5px;
  width: 10px;
  height: 2px;
}

.checkbox.plus input[type="checkbox"]:checked:after {
  left: 5px;
  top: 1px;
  width: 2px;
  height: 10px;
}

.checkbox.times input[type="checkbox"]:before {
  transform: rotate(45deg);
  left: 3px;
  top: 1px;
  width: 0;
  height: 2px;
}

.checkbox.times input[type="checkbox"]:after {
  transform: rotate(135deg);
  right: 3px;
  top: 1px;
  width: 0;
  height: 2px;
}

.checkbox.times input[type="checkbox"]:checked:before {
  left: 1px;
  top: 5px;
  width: 10px;
  height: 2px;
}

.checkbox.times input[type="checkbox"]:checked:after {
  right: 1px;
  top: 5px;
  width: 10px;
  height: 2px;
}

.checkbox input[type="radio"] {
  border-radius: 50%;
}

.checkbox input[type="radio"]:before {
  content: "";
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin: 2px;
  transform: scale(0);
  transition: all 0.25s ease-out;
}

.checkbox input[type="radio"]:checked:before {
  transform: scale(1);
}

.checkbox input {
  border: 2px solid #2196f3;
}

.checkbox input[type="checkbox"]:checked {
  background: #2196f3;
}

.checkbox input[type="radio"]:checked:before {
  background: #2196f3;
}

.checkbox.red input {
  border-color: #fe5f58;
}

.checkbox.red input[type="checkbox"]:checked {
  background: #fe5f58;
}

.checkbox.red input[type="radio"]:checked:before {
  background: #fe5f58;
}

.checkbox.green input {
  border-color: #3dc550;
}

.checkbox.green input[type="checkbox"]:checked {
  background: #3dc550;
}

.checkbox.green input[type="radio"]:checked:before {
  background: #3dc550;
}

.checkbox.yellow input {
  border-color: #ffbd2b;
}

.checkbox.yellow input[type="checkbox"]:checked {
  background: #ffbd2b;
}

.checkbox.yellow input[type="radio"]:checked:before {
  background: #ffbd2b;
}

.checkbox.cyan input {
  border-color: #1bcdfc;
}

.checkbox.cyan input[type="checkbox"]:checked {
  background: #1bcdfc;
}

.checkbox.cyan input[type="radio"]:checked:before {
  background: #1bcdfc;
}

.checkbox.blue input {
  border-color: #2196f3;
}

.checkbox.blue input[type="checkbox"]:checked {
  background: #2196f3;
}

.checkbox.blue input[type="radio"]:checked:before {
  background: #2196f3;
}

.checkbox p {
  display: inline-block;
  margin-top: 2px !important;
  margin-bottom: 0 !important;
}

[data-theme="dark"] details {
  filter: brightness(0.7);
}

details {
  display: block;
  padding: 16px;
  margin: 0.5rem 0;
  border-radius: 4px;
  font-size: 0.7375rem;
  transition: all 0.28s ease;
  -moz-transition: all 0.28s ease;
  -webkit-transition: all 0.28s ease;
  -o-transition: all 0.28s ease;
  border: 1px solid #f6f6f6;
}

details summary {
  cursor: pointer;
  padding: 16px;
  margin: -16px;
  border-radius: 4px;
  color: rgba(85, 85, 85, 0.7);
  font-size: 0.7375rem;
  font-weight: bold;
  position: relative;
  line-height: normal;
}

details summary > p,
details summary > h1,
details summary > h2,
details summary > h3,
details summary > h4,
details summary > h5,
details summary > h6 {
  display: inline;
  border-bottom: none !important;
}

details summary:hover {
  color: #555;
}

details summary:hover:after {
  position: absolute;
  content: "+";
  text-align: center;
  top: 50%;
  transform: translateY(-50%);
  right: 16px;
}

details > summary {
  background: #f6f6f6;
}

details[blue] {
  border-color: #e8f4fd;
}

details[blue] > summary {
  background: #e8f4fd;
}

details[cyan] {
  border-color: #e8fafe;
}

details[cyan] > summary {
  background: #e8fafe;
}

details[green] {
  border-color: #ebf9ed;
}

details[green] > summary {
  background: #ebf9ed;
}

details[yellow] {
  border-color: #fff8e9;
}

details[yellow] > summary {
  background: #fff8e9;
}

details[red] {
  border-color: #feefee;
}

details[red] > summary {
  background: #feefee;
}

details[open] {
  border-color: rgba(85, 85, 85, 0.2);
}

details[open] > summary {
  border-bottom: 1px solid rgba(85, 85, 85, 0.2);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

details[open][blue] {
  border-color: rgba(33, 150, 243, 0.3);
}

details[open][blue] > summary {
  border-bottom-color: rgba(33, 150, 243, 0.3);
}

details[open][cyan] {
  border-color: rgba(27, 205, 252, 0.3);
}

details[open][cyan] > summary {
  border-bottom-color: rgba(27, 205, 252, 0.3);
}

details[open][green] {
  border-color: rgba(61, 197, 80, 0.3);
}

details[open][green] > summary {
  border-bottom-color: rgba(61, 197, 80, 0.3);
}

details[open][yellow] {
  border-color: rgba(255, 189, 43, 0.3);
}

details[open][yellow] > summary {
  border-bottom-color: rgba(255, 189, 43, 0.3);
}

details[open][red] {
  border-color: rgba(254, 95, 88, 0.3);
}

details[open][red] > summary {
  border-bottom-color: rgba(254, 95, 88, 0.3);
}

details[open] > summary {
  color: #555;
  margin-bottom: 0;
}

details[open] > summary:hover:after {
  content: "-";
}

details[open] > div.content {
  padding: 16px;
  margin: -16px;
  margin-top: 0;
}

details[open] > div.content p > a:hover {
  text-decoration: underline;
}

[data-theme="dark"] span.p {
  filter: brightness(0.7);
}

p.p.subtitle {
  font-weight: bold;
  color: #2196f3;
  padding-top: 1rem;
}

p.p.subtitle:first-child {
  padding-top: 0.5rem;
}

span.p.code,
p.p.code {
  font-family: Menlo, Monaco, monospace, courier, sans-serif;
}

span.p.left,
p.p.left {
  display: block;
  text-align: left;
}

span.p.center,
p.p.center {
  display: block;
  text-align: center;
}

span.p.right,
p.p.right {
  display: block;
  text-align: right;
}

span.p.small,
p.p.small {
  font-size: 0.575rem;
}

span.p.large,
p.p.large {
  font-size: 2rem;
  line-height: 1.4;
}

span.p.huge,
p.p.huge {
  font-size: 4rem;
  line-height: 1.4;
}

span.p.ultra,
p.p.ultra {
  font-size: 6rem;
  line-height: 1.4;
}

span.p.small,
p.p.small,
span.p.large,
p.p.large,
span.p.huge,
p.p.huge,
span.p.ultra,
p.p.ultra {
  font-family: UbuntuMono, "PingFang SC", "Microsoft YaHei", Helvetica, Arial,
	Menlo, Monaco, monospace, sans-serif;
  margin: 0;
  padding: 0;
}

span.p.bold,
p.p.bold {
  font-weight: bold;
}

span.p.h1,
p.p.h1 {
  font-size: 1.625rem;
  color: #555;
  padding-top: 1rem;
}

span.p.h2,
p.p.h2 {
  font-size: 1.375rem;
  color: var(--font-color);
  padding-top: 1rem;
  border-bottom: 1px solid var(--hr-border);
}

span.p.h3,
p.p.h3 {
  font-size: 1.25rem;
  color: #2196f3;
  padding-top: 1rem;
}

span.p.h4,
p.p.h4 {
  font-size: 1.125rem;
  color: #555;
  padding-top: 1rem;
}

span.p.red,
p.p.red {
  color: #fe5f58;
}

span.p.yellow,
p.p.yellow {
  color: #ffbd2b;
}

span.p.green,
p.p.green {
  color: #3dc550;
}

span.p.cyan,
p.p.cyan {
  color: #1bcdfc;
}

span.p.blue,
p.p.blue {
  color: #2196f3;
}

span.p.gray,
p.p.gray {
  color: #666;
}
/*tag end*/

/*note标签 https://lovelijunyi.gitee.io/posts/c898.html*/
div.note.red::before {
  content: "\f054";
}

div.note.quote {
  background: #e8f4fd;
  border-color: #2196f3;
}

div.note.quote::before {
  color: #2196f3;
  content: "\f10d";
}

div.note.radiation::before {
  content: "\f7b9";
}

div.note.bug::before {
  content: "\f188";
}

div.note.idea::before {
  content: "\f0eb";
}

div.note.link::before {
  content: "\f0c1";
}

div.note.paperclip::before {
  content: "\f0c6";
}

div.note.todo::before {
  content: "\f0ae";
}

div.note.message::before {
  content: "\f4ad";
}

div.note.guide::before {
  content: "\f277";
}

div.note.download::before {
  content: "\f019";
}

div.note.up::before {
  content: "\f102";
}

div.note.undo::before {
  content: "\f2ea";
}

div.note.play::before {
  content: "\f144";
}

div.note.message::before {
  content: '\f4ad';
}

div.note.clear {
  background: none;
  border-color: none;
}

div.note.light {
  background: #f6f6f6;
  border-color: #aaa;
}

div.note.light::before {
  color: #aaa;
}

div.note.gray {
  background: #f6f6f6;
  border-color: #767676;
}

div.note.gray::before {
  color: #767676;
}

div.note.red {
  background: #feefee;
  border-color: #fe5f58;
}

div.note.red::before {
  color: #fe5f58;
}

div.note.yellow {
  background: #fff8e9;
  border-color: #ffbd2b;
}

div.note.yellow::before {
  color: #ffbd2b;
}

div.note.green {
  background: #ebf9ed;
  border-color: #3dc550;
}

div.note.green::before {
  color: #3dc550;
}

div.note.cyan::before {
  color: #1bcdfc;
}

div.note.blue::before {
  color: #2196f3;
}

div.note.blue {
  background: #e8f4fd;
  border-color: #2196f3;
}

[data-theme="dark"] .note p{
  color: #000;
}
/*note标签结束*/

/* 标签显影 */
#article-container psw:hover {
  color: #333;
  background: none;
}

#article-container psw {
  color: transparent;
  background: #666;
  border-radius: 2px;
  transition: all 0.28s ease;
  -moz-transition: all 0.28s ease;
  -webkit-transition: all 0.28s ease;
  -o-transition: all 0.28s ease;
}

[data-theme="dark"] #article-container psw:hover {
  color: #fff;
  filter: brightness(0.7);
}
/* 标签显影END */

/* 时间线 */
div.timenode {
  position: relative;
}
div.timenode:before,
div.timenode:after {
  content: "";
  z-index: 1;
  position: absolute;
  background: rgba(68, 215, 182, 0.5);
  width: 2px;
  left: 7px;
}
div.timenode:before {
  top: 0;
  height: 6px;
}
div.timenode:after {
  top: 26px;
  height: calc(100% - 26px);
}
div.timenode:last-child:after {
  height: calc(100% - 26px - 16px);
  border-bottom-left-radius: 2px;
  border-bottom-right-radius: 2px;
}
div.timenode .meta,
div.timenode .body {
  max-width: calc(100% - 24px);
}
div.timenode .meta {
  position: relative;
  color: var(--tab-botton-color);
  font-size: 0.375rem;
  line-height: 32px;
  height: 32px;
}
div.timenode .meta:before,
div.timenode .meta:after {
  content: "";
  position: absolute;
  top: 8px;
  z-index: 2;
}
div.timenode .meta:before {
  background: rgba(68, 215, 182, 0.5);
  width: 16px;
  height: 16px;
  border-radius: 8px;
}
div.timenode .meta:after {
  background: #44d7b6;
  margin-left: 2px;
  margin-top: 2px;
  width: 12px;
  height: 12px;
  border-radius: 6px;
  transform: scale(0.5);
}
div.timenode .meta p {
  font-weight: bold !important;
  margin: 0 0 0 24px !important;
}
div.timenode .body {
  margin: 4px 0 10px 24px;
  padding: 10px;
  border-radius: 12px;
  background: #efeded;
  display: inline-block;
}
div.timenode .body p:first-child {
  margin-top: 0 !important;
}
div.timenode .body p:last-child {
  margin-bottom: 0 !important;
}
div.timenode .body .highlight {
  background: #fff7ea;
  filter: grayscale(0%);
}
div.timenode .body .highlight figcaption {
  background: #ffeed2;
}
div.timenode .body .highlight .gutter {
  background: #ffedd0;
}
div.timenode:hover .meta {
  color: #444;
}
div.timenode:hover .meta:before {
  background: rgba(255, 87, 34, 0.5);
}
div.timenode:hover .meta:after {
  background: #ff5722;
  transform: scale(1);
}

[data-theme="dark"] div.timenode .body {
  background: #2c2c2c;
}

[data-theme="dark"] div.timenode:hover .meta {
  color: #ccd0d7;
}

[data-theme="dark"] div.timenode .meta {
  color: rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] div.timeline p.p.h2 {
  color: rgba(255, 255, 255, 0.6);
}

/* link */
#article-container a.link-card {
  margin: 0.25rem auto;
  background: #f6f6f6;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  text-align: center;
  min-width: 200px;
  max-width: 361px;
  color: #444;
  border-radius: 12px;
  text-decoration: none;
}
@media screen and (max-width: 425px) {
  #article-container a.link-card {
	max-width: 100%;
  }
}
@media screen and (max-width: 375px) {
  #article-container a.link-card {
	width: 100%;
  }
}
#article-container a.link-card:hover {
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}
#article-container a.link-card div.left,
#article-container a.link-card div.right {
  pointer-events: none;
}
#article-container a.link-card div.left {
  width: 48px;
  height: 48px;
  margin: 12px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}
#article-container a.link-card div.left i {
  font-size: 32px;
  line-height: 48px;
  margin-left: 4px;
}
#article-container a.link-card div.left img {
  display: block;
  position: absolute;
  border-radius: 8px / 4;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
#article-container a.link-card div.right {
  overflow: hidden;
  margin-right: 12px;
}
#article-container a.link-card p {
  margin: 0;
}
#article-container a.link-card p.text {
  font-weight: bold;
}
#article-container a.link-card p.url {
  flex-shrink: 0;
  color: rgba(68, 68, 68, 0.65);
  font-size: 13px;
}

[data-theme="dark"] #article-container a.link-card img {
  filter: brightness(1);
}

[data-theme="dark"] #article-container a.link-card {
  filter: brightness(0.7);
}
找到主题配置文件_config.butterfly.yml，在inject的head处引入上一步创建的css文件：
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inject:
head:
- <link rel="stylesheet" href="/css/tag.css">
下载 hexo-theme-volantis 主题，复制 scripts\tags 下的主题到 themes\Butterfly\scripts\tag 中，仅复制以下内容即可：
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btns.js
checkbox.js
folding.js
link.js
span.js
timeline.js
使用参考基于 Butterfly 主题魔改的样式查阅
后记

可以使用别样的外挂标签样式。