> For the complete documentation index, see [llms.txt](https://seula00027.gitbook.io/til/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://seula00027.gitbook.io/til/css-rendering/02.md).

# 코드 스피츠 - CSS Rendering 1회차 2/2

<https://youtu.be/ybNH1a14vQY> 를 보고 정리한 내용

## Float

* New BFC
* Float over Normal Flow
* Text, Inline guard
* Line Box

**LINE BOX** 로 나타낸다.

여기서 잠깐 이전시간 복습 Normal Flow가 그려지는 방법: IFC, BFC, Relative

```markup
<div style="width:500px">
  <div style="width:50px;background:red"></div>
  <div class="box2" style="width:200px;height:150px;float:left;background:rgba(0,255,0,0.5)"></div>
  <div style="height:50px;background:skyblue"></div>
</div>
```

투명도를 0.5준 `.box2`까지가 BFC로 생성된다.

skyblue도 BFC로 그려지지만 .box2 위로 떠있다.

이 현상을 **Normal Flow + Float** 으로 설명할 수 있다.

**BFC영역은 어디까지일까** Float 영역 전체 + 인라인 영역 전체하는 공간 끝까지이다.

### Inline Guard

```markup
<div style="width:500px">
  <div style="width:50px;background:red"></div>
  <div class="box2" style="width:200px;height:150px;float:left;background:rgba(0,255,0,0.5)"></div>
  HELLO
  <div style="height:50px;background:skyblue">WORLD</div>
</div>
```

Inline Guard로 작동되기 때문에 inline요소들은 Box2와 겹치지 않고 옆에 붙는다. (혹은 가로값의 합이 부모값보다 크다면 밑으로.. )

### Line Box

```markup
<div style="width:500px">
    <div class="left" style="width:200px;height:150px"></div>
  <div class="right" style="width:50px;height:150px"></div>
  <div class="right" style="width:50px;height:100px"></div>
  <div class="left" style="width:150px;height:50px">4</div>
  <div class="right" style="width:150px;height:70px">5</div>
  <div class="left" style="width:150px;height:50px">6</div>
  <div class="left" style="width:150px;height:50px">7</div>
  <div style="height:30px;background:red">ABC</div>
</div>
```

Line Box는 무조건 Float만 신경쓴다. 가로세로 다 본다..

### Overflow

css2.1 visual formatting model

visible | hidden | scroll | inherit | auto

* auto - 기본값, 내부의 영역의 크기가 커지면 부모도 커진다.
* visible == auto 일치
* scroll 내 geometry영역을 넘어가면 scroll을 만든다.
* gemetry hidden 안보이게 짤라줘

### Overflow-x, y

overflow module level3 draft

visible | hidden | scroll | clip | auto

### Text-overflow

css2.1 UI Module level3

clip | ellipsis

### Overflow - hidden, scroll

은 float와 관련이 있다.

```markup
<div style="width:500px">
    <div class="left" style="width:200px;height:150px"></div>
  <div class="right" style="width:50px;height:150px"></div>
  <div class="right" style="width:50px;height:100px"></div>
  <div class="left" style="width:150px;height:50px">4</div>
  <div class="right" style="width:150px;height:70px">5</div>
  <div class="left" style="width:150px;height:50px">6</div>
  <div class="left" style="width:150px;height:50px">7</div>
  <div style="height:30px;background:red">ABC</div>
  <div class="hidden" style="height:30px;background:red;">A</div>
  <div class="hidden" style="height:15px;background:orange">B</div>
  <div style="height:30px;background:black"></div>
  <div class="hidden" style="height:30px;background:red">C</div>
  <div class="hidden" style="height:30px;background:orange">D</div>
  <div style="height:30px;background:black"></div>
  <div class="hidden" style="backgroud:red">E</div>
  <div style="height:30px;background:black"></div>
  <div class="hidden" style="height:30px;background:orange">F</div>
  <div style="height:30px;background:black"></div>
</div>
```

* New BFC - 새로운 BFC를 만든다.
* First Line Box Bound

overflow auto라도 inline으로 박스가 늘어나지만 line으로는 박스가 늘어나지 않는다.


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