1. 修改页面大小

D:\Program Files\Typora\resources\app\style\themes\github.css

修改对应的主题文件 如github.css
max-width 原值820px 改成95%

#write {
    max-width: 95%;
  	margin: 0 auto;
  	padding: 30px;
    padding-bottom: 100px;
}

2. 加粗变红

strong {
	color:red;
}

3. title样式修改

h1 {
	padding-bottom: .3em;
	font-size: 1.3em;
	line-height: 1;
	font-weight: bold;
	//border-bottom: 1px solid #eee;
}
h2 {
   padding-bottom: .3em;
	font-size: 1.1em;
	line-height: 1;
	font-weight: bold;
	//border-bottom: 1px solid #eee;
}
h3 {
	font-size: 1em;
	line-height: 1;
	font-weight: normal;
}
h4 {
	font-size: 1em;
	font-weight: normal;
}
h5 {
	font-size: 1em;
	font-weight: normal;
}
h6 {
   font-size: 1em;
   color: #777;
   font-weight: normal;
}