html----h1-6标签

     Html的标题标签h1-h6种选择，从大到小；默认上下margin一样，靠左，不好改变；能用定位改变。

1、<h1></h1>

1. display:block;
2. font-size:32px;
3. font-weight:700;
4. height:42px;
5. margin-block-end:21.44px;
6. margin-block-start:21.44px;
7. margin-inline-end:0px;
8. margin-inline-start:0px;

2、<h2></h2>

1. display:block;
2. font-size:24px;
3. font-weight:700;
4. height:31px;
5. margin-block-end:19.92px;
6. margin-block-start:19.92px;
7. margin-inline-end:0px;
8. margin-inline-start:0px;

3、<h3></h3>

1. display:block;
2. font-size:13.28px;
3. font-weight:700;
4. height:17px;
5. margin-block-end:22.1776px;
6. margin-block-start:22.1776px;
7. margin-inline-end:0px;
8. margin-inline-start:0px;

4、<h4></h4>

1. display:block;
2. font-weight:700;
3. height:21px;
4. margin-block-end:21.28px;
5. margin-block-start:21.28px;
6. margin-inline-end:0px;
7. margin-inline-start:0px;

5、<h5></h5>

1. display:block;
2. font-size:13.28px;
3. font-weight:700;
4. height:17px;
5. margin-block-end:22.1776px;
6. margin-block-start:22.1776px;
7. margin-inline-end:0px;
8. margin-inline-start:0px;

6、<h6></h6>

1. display:block;
2. font-size:12px;
3. font-weight:700;
4. height:16px;
5. margin-block-end:27.96px;
6. margin-block-start:27.96px;
7. margin-inline-end:0px;
8. margin-inline-start:0px;