常用LaTeX數學表示式與部份HTML語法

注意事項：

1. 單行內使用 $[Expression]$，左邊＄之後與右邊＄之前不可有空白。
2. 獨立表示使用

$$
[Expression]
$$

---

• 常用LaTeX數學表示式與部份HTML語法
  • 空格
  • 希臘字母
    • 小寫：
    • 大寫：
  • 下標(_)
  • 上標(^)
  • 上下標
  • 根號(\sqrt, \surd)
  • Overline, 底線(\overline, \underline)
  • 下括號(\underbrace)
  • 向量(\vec, \overrightarrow, \overleftarrow)
  • 分數(\frac, \over)
  • 和(\sum)
  • 積分(\int)
  • 乘積(\prod)
  • 換行對齊(\begin{aligned}+\end{aligned})
  • 字母重音符號
  • 二元關係符號
  • 二元運算符號
  • 大尺寸符號
  • 定界符號
  • 大尺寸定界符號
  • 數學符號表
  • 字體
    • 大小
  • AMS常用其它符號(節錄)
  • AMS二元關係符(節錄)
  • AMS箭頭(節錄)
  • 數學函數(例)
  • 矩陣語法
    • 使用\left ... \right與/或\begin{matrix}... \end{matrix}。
    • 使用\begin{array}{__|_}...\end{array}
    • 包含文字，使用\mbox{}
  • HTML部份語法
    • 字型相關
    • 空格相關
    • 常用顏色表
  • Emoji
  • 小圖示

空格

$◻◻:$ \square \qquad \square

$◻◻:$ \square \quad \square

$◻◻:$ \square \; \square

$◻◻:$ \square \ \square

$◻◻:$ \square \, \square

$◻◻:$ \square \square

$◻◻:$ \square \! \square

希臘字母

小寫：

$\alpha :$ \alpha;

$\beta :$ \beta;

$\gamma :$ \gamma;

$\delta :$ \delta;

$ϵ:$ \epsilon;

$\epsilon :$ \varepsilon;

$\zeta :$ \zeta;

$\eta :$ \eta;

$\theta :$ \theta;

$\vartheta :$ \vartheta;

$\iota :$ \iota;

$\kappa :$ \kappa;

$\lambda :$ \lambda;

$\mu :$ \mu;

$\nu :$ \nu;

$\xi :$ \xi;

$o:$ o;

$\pi :$ \pi;

$\varpi :$ \varpi;

$\sigma :$ \sigma;

$\varsigma :$ \varsigma;

$\tau :$ \tau;

$\upsilon :$ \upsilon;

$\varphi :$ \phi;

$\phi :$ \varphi;

$\chi :$ \chi;

$\psi :$ \psi;

$\omega :$ \omega;

大寫：

$\mathrm{\Gamma }:$ \Gamma;

$\mathrm{\Delta }:$ \Delta;

$\mathrm{\Theta }:$ \Theta;

$\mathrm{\Lambda }:$ \Lambda;

$\mathrm{\Xi }:$ \Xi;

$\mathrm{\Pi }:$ \Pi;

$\mathrm{\Sigma }:$ \Sigma;

$\mathrm{{\rm Y}}:$ \Upsilon;

$\mathrm{\Phi }:$ \Phi;

$\mathrm{\Psi }:$ \Psi;

$\mathrm{\Omega }:$ \Oemga

---

下標(_)

$a_1:$ a_1

---

上標(^)

$x^{-2}:$ x^{-2}

---

上下標

${\beta }_{j,k}^i:$ \beta^i_{j, k}

${}_b^a{X}_2^1:$ ^a_bX^1_2

---

根號(\sqrt, \surd)

$\sqrt{x^2+\sqrt{y}}:$ \sqrt {x^2+ \sqrt y}

$\sqrt[x]{y}:$ \sqrt[x]y

$\surd [x^2+y^3]:$ \surd[x^2+y^3]

---

Overline, 底線(\overline, \underline)

$\overline{a+b}:$ \overline{a+b}

$\overline{\stackrel{―}{a}+b}:$ \overline{\overline a +b}

$\underset{―}{\varphi }:$ \underline \phi

---

下括號(\underbrace)

$\underset{26}{\underbrace{a+b+c+\cdots +z}}:$ \underbrace{a+b+c+ \cdots +z}_{26}

---

向量(\vec, \overrightarrow, \overleftarrow)

$\overrightarrow{a}:$ \vec a

$\overrightarrow{AB}:$ \quad \overrightarrow {AB}

$\overleftarrow{{\alpha }_1}:$ \overleftarrow {\alpha_1}

---

分數(\frac, \over)

$\frac{x+7}{x+y}:$ \frac{x+7}{x+y}

$\frac{{\pi }^{(\frac{1}{x^2})}}{x+y}:$ \quad \frac {\pi^{(\frac 1{x^2})}} {x+y}

$\frac{x+y}{x-y}:$ \quad {{x+y} \over {x-y}}

---

和(\sum)

$\sum _{i=1}^{n}f(x_i):$ \sum_{i=1}^nf(x_i)
或

$$\sum _{i=1}^{n}f(x_i)$$
\sum_{i=1}^{n}f(x_i)

行內表示式上下標與單行表示式不同

---

積分(\int)

${\int }_0^{2\pi }:$ \int_0^{2\pi}

---

乘積(\prod)

$\prod _{ϵ}:$ \prod_\epsilon
或

$$\prod _{ϵ}$$
\prod_\epsilon

行內表示式上下標與單行表示式不同

---

換行對齊(\begin{aligned}+\end{aligned})

$$\begin{array}{rl}Datadurability& =1-(AFR/\frac{365}{MTTR}{)}^{Parity}\\ \\ & =1-(\frac{24\ast MTTR}{MTBF}{)}^{Parity}\end{array}$$

\begin{aligned}
Data\,durability &= 1-(\frac{AFR}{\frac{365}{MTTR}}) ^{Parity} \\ \\ &= 1 - (\frac{24*MTTR}{MTBF}) ^{Parity}
\end{aligned}

使用\\換行，對齊處以&標註

$Datadurability=1-(AFR/\frac{365}{MTTR}{)}^{Parity},AFR=\frac{24\ast 365}{MTBF}$

---

字母重音符號

$\hat{a}:$ \hat a;

$\check{a}:$ \check a;

$\tilde{a}:$ \tilde a;

$\acute{a}:$ \acute a;

$\stackrel{`}{a}:$ \grave a;

$\dot{a}:$ \dot a;

$\ddot{a}:$ \ddot a;

$\breve{a}:$ \breve a;

$\overline{a}:$ \bar a;

$\overrightarrow{a}:$ \vec a;

$\hat{A}:$ \widehat A;

$\tilde{A}:$ \widetilde A

---

二元關係符號

$<:$ <;

$>:$ >;

$=:$ =;

$\le :$ \le或\leq;

$\ge :$ \ge或geq;

$\equiv :$ \equiv;

$\ll :$ \ll;

$\gg :$ \gg;

$\doteq :$ \doteq;

$\prec :$ \prec;

$\succ :$ \succ;

$\sim :$ \sim;

$⪯:$ \preceq;

$⪰:$ \succeq;

$\simeq :$ \simeq;

$\subset :$ \subset;

$\approx :$ \approx;

$\subseteq :$ \subseteq;

$\supseteq :$ \supseteq;

$\cong :$ \cong;

$⊏:$ \sqsubset;

$⊐:$ \sqsupset;

$\bowtie :$ \JoinJ要大寫;

$⊑:$ \sqsubseteq;

$⊒:$ \sqsupseteq;

$\bowtie :$ \bowtie;

$\in :$ \in;

$\ni :$ \ni或\owns;

$\propto :$ \propto;

$⊢:$ \vdash;

$⊣:$ \dashv;

$\models :$ \models;

$\mid :$ \mid;

$\parallel :$ \parallel;

$\perp :$ \perp;

$⌣:$ \smile;

$⌢:$ \frown;

$\asymp :$ \asymp;

$::$ :;

$\notin :$ \notin;

$\ne :$ \ne或\neq;

---

二元運算符號

$+:$ +;

$-:$ -;

$\pm :$ \pm;

$\mp :$ \mp;

$◃:$ \triangleleft;

$▹:$ \triangleright;

$\cdot :$ \cdot;

$÷:$ \div;

$\times :$ \times;

$\setminus :$ \setminus;

$\star :$ \star;

$\cup :$ \cup;

$\cap :$ \cap;

$\ast :$ \ast;

$\bigsqcup :$ \sqcup;

$\sqcap :$ \sqcap;

$\circ :$ \circ;

$\bullet :$ \bullet;

$\diamond :$ \diamond;

$\vee :$ \vee或\lor;

$\wedge :$ \wegde或\land;

$\oplus :$ \oplus;

$\ominus :$ \ominus;

$\odot :$ \odot;

$\oslash :$ \oslash;

$\otimes :$ \otimes;

$◯:$ \bigcirc;

$\uplus :$ \uplus;

$⨿:$ \amalg;

$△:$ \bigtriangleup;

$▽:$ \bigtriangledown;

$⊲:$ \lhd;

$⊳:$ \rhd;

$⊴:$ \unlhd;

$⊵:$ \unrhd;

$†:$ \dagger;

$‡:$ \ddagger;

$\wr :$ \wr;

---

大尺寸符號

$\leftarrow :$ \leftarrow或\gets;

$⟵:$ \longleftarrow;

$\to :$ \right arrow或\to;

$⟶:$ \longrightarrow;

$\uparrow :$ \uparrow;

$\downarrow :$ \downarrow;

$\updownarrow :$ \updownarrow;

$\leftrightarrow :$ \leftrightarrow;

$⟷:$ \longleftrightarrow;

$\Leftarrow :$ \Leftarrow;

$\Rightarrow :$ \Rightarrow;

$⟸:$ \Longleftarrow;

$⟹:$ \Longrightarrow;

$\iff :$ \Leftrightarrow;

$⟺:$ \Longleftrightarrow;

$\Uparrow :$ \Uparrow;

$\Downarrow :$ \Downarrow;

$\Updownarrow :$ \Updownarrow;

$\mapsto :$ \mapsto;

$⟼:$ \longmapsto;

$\nearrow :$ \nearrow;

$\searrow :$ \searrow;

$\swarrow :$ \swarrow;

$\nwarrow :$ \nwarrow;

$\hookleftarrow :$ \hookleftarrow;

$\hookrightarrow :$ \hookrightarrow;

$\leftharpoonup :$ \leftharpoonup;

$\rightharpoonup :$ \rightharpoonup;

$\leftharpoondown :$ \leftharpoondown;

$\rightharpoondown :$ \rightharpoondown;

$\rightleftharpoons :$ \rightleftharpoons;

$⟺:$ \iff;

$⇝:$ \leadsto;

---

定界符號

$(:$ (;

$):$ );

$[:$ [或\lbrack;

$]:$ ]或\rbrack;

$\{:$ \{或\lbrace;

$\}:$ \}或\rbrace;

$⟨:$ \langle;

$⟩:$ \rangle;

$\lfloor :$ \lfloor;

$\rfloor :$ \rfloor;

$\lceil :$ \lceil;

$\rceil :$ \rceil;

$\uparrow :$ \uparrow;

$\Uparrow :$ \Uparrow;

$\downarrow :$ \downarrow;

$\Downarrow :$ \Downarrow;

$\updownarrow :$ \updownarrow;

$\Updownarrow :$ \Updownarrow;

$|:$ |或\vert;

$\Vert :$ \|或\Vert;

$/:$ /;

$\mathrm{\setminus }:$ \backslash;

例：

$⟨\frac{(x-y{)}^2}{(x+y{)}^2}⟩:$ \langle {(x-y)^2 \over (x+y)^2} \rangle

$$\lceil \sum _{i=0}^x{i}^2,{\int }_{i=0}^x{i}^2\rfloor$$
\lceil {\sum^x_{i=0}i^2}, \int_{i=0}^xi^2 \rfloor

---

大尺寸定界符號

$⟮:$ \lgroup;

$⟯:$ \rgroup;

$⎰:$ \lmoustache;

$⎱:$ \rmoustache;

$⏐:$ \arrowvert;

$\Vert :$ \Arrowvert;

$⎪:$ \bracevert;

---

數學符號表

$\cdots :$ \dots;

$\cdots :$ \cdots;

$⋮:$ \vdots;

$\ddots :$ \ddots;

$\hslash :$ \hbar;

$ı:$ \imath;

$ȷ:$ \jmath;

$\ell :$ \ell;

$\mathrm{\Re }:$ \Re;

$\mathrm{\Im }:$ \Im;

$\mathrm{\aleph }:$ \aleph;

$\mathrm{\wp }:$ \wp;

$\mathrm{\forall }:$ \forall;

$\mathrm{\exists }:$ \exists;

$\mho :$ \mho;

$\partial :$ \partial;

${}^{\prime }:$ ';

${}^{″}:$ '';

$\prime :$ \prime;

$\mathrm{\varnothing }:$ \emptyset;

$\mathrm{\infty }:$ \infty;

$\mathrm{\nabla }:$ \nabla;

$\mathrm{△}:$ \triangle;

$◻:$ \Box;

$◊:$ \Diamond;

$\mathrm{\perp }:$ \bot;

$\mathrm{\top }:$ \top;

$\mathrm{\angle }:$ \angle;

$\mathrm{♢}:$ \diamondsuit;

$\mathrm{♡}:$ \heartsuit;

$\mathrm{♣}:$ \clubsuit;

$\mathrm{♠}:$ \spadesuit;

$\mathrm{\neg }:$ \neg或lnot;

$\mathrm{♭}:$ \flat;

$\mathrm{♮}:$ \natural;

$\mathrm{♯}:$ \sharp;

---

字體

$\mathcal{[e-mail]}\mathcal{}\mathcal{}\mathcal{}\mathrm{測}\mathrm{試}:$ \mathcal{[e-mail]};

$\mathbb{[e-mail]}\mathbb{}\mathbb{}\mathbb{}\mathrm{測}\mathrm{試}:$ \mathbb{[e-mail]};

$\mathbf{[e-mail]}\mathbf{}\mathbf{}\mathbf{}\mathrm{測}\mathrm{試}:$ \mathbf{[e-mail]};

$\mathfrak{[e-mail]}\mathfrak{}\mathfrak{}\mathfrak{}\mathrm{測}\mathrm{試}:$ \mathfrak{[e-mail]};

$\mathit{[e-mail]}\mathit{}\mathit{}\mathit{}\mathrm{測}\mathrm{試}:$ \mathit{[e-mail]};

$\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \mathrm{[e-mail]};

$\mathsf{[e-mail]}\mathsf{}\mathsf{}\mathsf{}\mathrm{測}\mathrm{試}:$ \mathsf{[e-mail]};

$\mathcal{[e-mail]}\mathcal{}\mathcal{}\mathcal{}\mathrm{測}\mathrm{試}:$ \mathscr{[e-mail]};

$\mathtt{[e-mail]}\mathtt{}\mathtt{}\mathtt{}\mathrm{測}\mathrm{試}:$ \mathtt{[e-mail]};

$\mathit{\text{<italic>[e-mail]}}:$ \textit{<italic>[e-mail]}

$\mathbf{\text{<boldface>[e-mail]}}:$ \textbf{<boldface>[e-mail]}

$\text{<roman>[e-mail]}:$ \textrm{<roman>[e-mail]}

$\mathsf{\text{<sans serif>[e-mail]}}:$ \textsf{<sans serif>[e-mail]}

$\mathtt{\text{<typewriter>[e-mail]}}:$ \texttt{<typewriter>[e-mail]}

大小

$tiny-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \tiny tiny - [e-mail]測試

$scriptsize-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \scriptsize script size - [e-mail]測試

$small-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \small small - [e-mail]測試

$normalsize-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \normalsize normal size - [e-mail]測試

$large-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \large large - [e-mail]測試

$Large-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \Large Large - [e-mail]測試

$LARGE-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \LARGE LARGE - [e-mail]測試

$huge-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \huge huge - [e-mail]測試

$Huge-\mathrm{[e-mail]}\mathrm{}\mathrm{測}\mathrm{試}:$ \Huge Huge - [e-mail]測試

---

AMS常用其它符號(節錄)

$\hslash :$ \hbar;

$\hslash :$ \hslash;

$\mathbb{k}:$ \Bbbk;

$◻:$ \square;

$◼:$ \blacksquare;

$\mathrm{Ⓢ}:$ \circledS;

$△:$ \vartriangle;

$▴:$ \blacktriangle;

$▽:$ \triangledown;

$▾:$ \blacktriangledown;

$◊:$ \lozenge;

$⧫:$ \blacklozenge;

$\complement :$ \complement;

$⅁:$ \Game;

$★:$ \bigstar;

$\measuredangle :$ \measuredangle;

$\sphericalangle :$ \sphericalangle;

$╱:$ \diagup;

$╲:$ \diagdown;

$‵:$ \backprime;

$\nexists :$ \nexists;

$Ⅎ:$ \Finv;

$\varnothing :$ \varnothing;

$\mathrm{ð}:$ \eth;

---

AMS二元關係符(節錄)

$\therefore :$ \therefore;

$\because :$ \because;

$\leqq :$ \leqq;

$\geqq :$ \geqq;

$\doteqdot :$ \doteqdot或\Ddoteq;

$\approx :$ \thickapprox;

$\between :$ \between;

$◂:$ \blacktriangleleft;

$▸:$ \blacktriangleright;

---

AMS箭頭(節錄)

$\leftrightarrows :$ \leftrightarrows;

$\rightleftarrows :$ \rightleftarrows;

$\Leftarrow :$ \Leftarrow;

$\Rightarrow :$ \Rightarrow;

$\leftarrowtail :$ \leftarrowtail;

$\rightarrowtail :$ \rightarrowtail;

$\leftrightharpoons :$ \leftrightharpoons;

$\rightleftharpoons :$ \rightleftharpoons;

$\Lsh :$ \Lsh;

$\Rsh :$ \Rsh;

$⇝:$ \rightsquigarrow;

$\looparrowleft :$ \looparrowleft;

$\looparrowright :$ \looparrowright;

$\curvearrowleft :$ \curvearrowleft;

$\curvearrowright :$ \curvearrowright;

$\circlearrowleft :$ \circlearrowleft;

$\circlearrowright :$ \circlearrowright;

$\leftrightsquigarrow :$ \leftrightsquigarrow;

---

數學函數(例)

$\underset{x\to 0}{lim}:$ \lin_{x \rightarrow 0}
或

$$\underset{x\to 0}{lim}$$
\lim_{x \rightarrow 0}

---

矩陣語法

使用\left ... \right與/或\begin{matrix}... \end{matrix}。

語法：

1. 無括號(直接使用\begin{matrix}...\end{matrix})：
   
   $\begin{array}{cc}a& b\\ c& d\end{array}$
   \left. \begin{matrix} a & b \\ c & d \end{matrix} \right.
   或
   
   $\begin{array}{cc}a& b\\ c& d\end{array}$
   \begin{matrix} a & b \\ c & d\end{matrix};
2. 小括號：
   
   $\left(\begin{array}{cc}a& b\\ c& d\end{array}\right)$
   \left( \begin{matrix} a & b \\ c & d \end{matrix} \right)
   或
   
   $\left(\begin{array}{cc}a& b\\ c& d\end{array}\right)$
   \begin{pmatrix} a & b \\ c & d \end{pmatrix}
3. 中括號：
   
   $\left[\begin{array}{cc}a& b\\ c& d\end{array}\right]$
   \left[ \begin{matrix} a & b \\ c & d \end{matrix} \right]
   或
   
   $\left[\begin{array}{cc}a& b\\ c& d\end{array}\right]$
   \begin{bmatrix} a & b \\ c & d \end{bmatrix}
4. 大括號：
   
   $\left\{\begin{array}{cc}a& b\\ c& d\end{array}\right\}$
   \left\{ \begin{matrix} a & b \\ c & d \end{matrix} \right\}
   或
   
   $\left\{\begin{array}{cc}a& b\\ c& d\end{array}\right\}$
   \begin{Bmatrix} a & b \\ c & d \end{Bmatrix}
5. 垂直線：
   
   $\left|\begin{array}{cc}a& b\\ c& d\end{array}\right|$
   \left\vert \begin{matrix} a & b \\ c & d \end{matrix} \right\vert
   或
   
   $\left|\begin{array}{cc}a& b\\ c& d\end{array}\right|$
   \begin{vmatrix} a & b \\ c & d \end{vmatrix}
6. 雙垂直線：
   
   $\Vert \begin{array}{cc}a& b\\ c& d\end{array}\Vert$
   \left\Vert \begin{matrix} a & b \\ c & d \end{matrix} \right\|
\Vert與\|互通
   或
   
   $\Vert \begin{array}{cc}a& b\\ c& d\end{array}\Vert$
   \begin{Vmatrix} a & b \\ c & d \end{Vmatrix}

例一 (注意各式括號的產生方式)

$$\begin{array}{}\text{(a)}& \left(\left[\begin{array}{ccc}8& 3& 4\\ 1& 5& 9\\ 6& 7& 2\end{array}\right]\right\}\end{array}$$
$$
\left(
\begin{bmatrix}
8 & 3 & 4 \\
1 & 5 & 9 \\
6 & 7 & 2
\end{bmatrix}
\right\} \tag{a}
$$

使用\begin{array}{__|_}...\end{array}

{__|_}語法可調整矩陣各元素的分割與對齊方式。

例二

$$\left[\left(\begin{array}{c}\begin{array}{ccc}1& 2& 3\\ 4& 5& 6\end{array}\end{array}\right)\right\}$$
\left[ \begin{pmatrix}
\begin{array}{c|cc}
1 & 2 & 3 \\
4 & 5 & 6
\end{array}
\end{pmatrix}
\right\}

包含文字，使用\mbox{}

例三 (注意\right.)

$$g(x,y)=\{\begin{array}{ll}f(x,y),& \text{if }x<y\\ f(y,x),& \text{if }x>y\\ 0,& \text{otherwise.}\end{array}$$
g(x,y) = \left\{\begin{array}{ll}
f(x,y), & \mbox{if $x<y$} \\ % 文字的部份要用 \mbox
f(y,x), & \mbox{if $x>y$} \\ % 包住，讓他使用正常字體
0, & \mbox{otherwise.}
\end{array} \right.

例四 (增廣矩陣)：

$$\left[\begin{array}{cc}\begin{array}{cccc}1& 12& 3& 8\\ 14& 5& 16& 21\\ 7& 18& 9& 7\\ 23& 0& -1& 8\end{array}& \begin{array}{cc}1& 4\\ 2& 5\\ 3& 6\\ 13& 26\end{array}\end{array}\right]$$
\left[
{\begin{array}{c|c}
\begin{matrix}
1 & 12 & 3 & 8 \\
14 & 5 & 16 &21\\
7 & 18 & 9 &7 \\
23 & 0 & -1 &8\\
\end{matrix}&
\begin{matrix}
1 & 4 \\
2 & 5 \\
3 & 6 \\
13 & 26 \\
\end{matrix}
\end{array}}
\right]

---

HTML部份語法

字型相關

  文字顏色一 <font color=#FF0000>文字顏色一</font>
或
  文字顏色二 <font style="color:blue;">文字顏色二</font>

  文字背景 <font style="background-color:#ccffff;">文字背景</font>

  verdana字型ABCabc123 <font style="font-family:verdana;">verdana字型ABCabc123</font>
  標楷體字型ABCabc123 <font style="font-family:標楷體;">標楷體字型ABCabc123</font>
  serif字型ABCabc123<span style="font-family:serif;">serif字型ABCabc123</span>
  sans-serif字型ABCabc123<span style="font-family:sans-serif;">sans-serif字型ABCabc123</span>
  cursive字型ABCabc123<span style="font-family:cursive;">cursive字型ABCabc123</span>
  fantasy字型ABCabc123<span style="font-family:fantasy;">fantasy字型ABCabc123</span>
  monospace字型ABCabc123<span style="font-family:monospace;">monospace字型ABCabc123</span>
  細明體字型ABCabc123<span style="font-family:MingLiU;">細明體字型ABCabc123</span>
  新細明體字型ABCabc123<span style="font-family:PMingLiU;">新細明體字型ABCabc123</span>
  標楷體字型ABCabc123<span style="font-family:DFKai-sb;">標楷體字型ABCabc123</span>
  微軟正黑體字型ABCabc123<span style="font-family:Microsoft JhengHei;">微軟正黑體字型ABCabc123</span>

  文字大小 <font style="font-size:200%;">文字大小</font>

  文字陰影。左移5像素，下移4像素，模糊半徑3像素，顏色#808080<font style="font-size:150%; text-shadow: -5px 4px 3px #808080;">文字陰影。左移5像素，下移4像素，模糊半徑3像素，顏色#808080</font>

空格相關

$◻◻$ (No space)

$◻$ 

$◻$  

$◻$ 

$◻$  

$◻$ 

$◻$  

---

常用顏色表

https://www.ifreesite.com/color/web-color-code.htm

---

Emoji

https://www.webfx.com/tools/emoji-cheat-sheet/
https://emojipedia.org/emoji-15.0/

➖ ✔ ✖

小圖示

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