<font size=5 face="ＭＳ ゴシック">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="ＭＳ Ｐ明朝">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="ＭＳ Ｐゴシック">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Arial">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Courier New">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Courier">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Times Roman">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Times New Roman">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Comic Sans MS">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="MS Sans">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Symbol">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Serif">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Dialog">Welcome The PurPose</font>
↓
Welcome The PurPose

<font size=5 face="Helvetica">Welcome The PurPose</font>
↓
Welcome The PurPose

-- Win、Macと組み合わせる場合 --
例：<font size=6 face="Times New Roman,Times">

※　この記述は、かなりHPを観覧しているパソコン、ブラウザ設定に依存されるので
あまり期待しない方が......