Relearn Frontend - HTML CSS

Posted on | In ,

Some useful notes about HTML/CSS.

meta

1
2
3
4
5
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width,
  initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no">
<meta name="renderer" content="webkit">

video

1
2
3
4
5
6
<video controls="controls" >
  <source src="movie.webm" type="video/webm" >
  <source src="movie.ogg" type="video/ogg" >
  <source src="movie.mp4" type="video/mp4">
  You browser does not support video.
</video>

Flex

Vertical center

1
2
3
4
<div id="parent">
  <div id="child">
  </div>
</div>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
#parent {
  display:flex;
  width:300px;
  height:300px;
  outline:solid 1px;
  justify-content:center;
  align-content:center;
  align-items:center;
}
#child {
  width:100px;
  height:100px;
  outline:solid 1px;
}

Two columns are equal in height

1
2
3
4
5
6
7
8
9
10
11
12
13
<div class="parent">
  <div class="child" style="height:300px;">
  </div>
  <div class="child">
  </div>
</div>
<br/>
<div class="parent">
  <div class="child" >
  </div>
  <div class="child" style="height:300px;">
  </div>
</div>
1
2
3
4
5
6
7
8
9
10
11
.parent {
  display:flex;
  width:300px;
  justify-content:center;
  align-content:center;
  align-items:stretch;
}
.child {
  width:100px;
  outline:solid 1px;
}

Adaptive width

1
2
3
4
5
6
<div class="parent">
  <div class="child1">
  </div>
  <div class="child2">
  </div>
</div>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
.parent {
  display:flex;
  width:300px;
  height:200px;
  background-color:pink;
}
.child1 {
  width:100px;
  background-color:lightblue;
}
.child2 {
  width:100px;
  flex:1;
  outline:solid 1px;
}