Loopcode/3css.html at main · Dharmandra-singh/Loopcode · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
<!DOCTYPE html>
<html lang="en">
<head>
<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-D0ENCWPZL9"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-D0ENCWPZL9');
</script>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>3. CSS Box Model</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body, html {
      height: 100%;
      font-family: 'Poppins', sans-serif;
      overflow-x: hidden;
      background-color: #1cc9be;
    }
    .section {
      background-color: rgba(255, 255, 255, 0.3);
      margin: 20px auto;
      padding: 20px;
      border-radius: 12px;
      width: 90%;
      max-width: 1000px;
      box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    }
    h2, h3 {
      color: #333;
      margin-bottom: 15px;
    }
    p {
      font-size: 18px;
      margin-bottom: 20px;
      line-height: 1.7;
    }
    textarea {
      width: 100%;
      height: 150px;
      font-family: monospace;
      font-size: 16px;
      padding: 10px;
      border: 2px solid white;
      border-radius: 8px;
      margin-top: 10px;
      margin-bottom: 10px;
      background: rgba(255,248,240,0.4);
    }
    button {
      background-color: #28a745;
      color: white;
      border: none;
      padding: 10px 20px;
      font-size: 16px;
      border-radius: 8px;
      cursor: pointer;
      margin-bottom: 20px;
    }
    iframe {
      width: 100%;
      height: 150px;
      background: rgba(255,248,240,0.4);
      border: 2px solid white;
      border-radius: 8px;
      margin-top: 15px;
    }
  </style>
</head>
<body>

<div class="section">
  <h2>3. CSS Box Model</h2>

  <h3>1. Box Model Overview</h3>
  <p><strong>Explanation:</strong> CSS Box Model ek element ke 4 main parts dikhata hai:
    <ul>
      <li><strong>Content:</strong> Actual text ya image</li>
      <li><strong>Padding:</strong> Content ke around space</li>
      <li><strong>Border:</strong> Padding ke baahar line</li>
      <li><strong>Margin:</strong> Border ke baahar ki space</li>
    </ul>
  </p>

  <textarea id="box1">
<!DOCTYPE html>
<html>
<head>
  <style>
    .box {
      background-color: lightblue;
      padding: 20px;
      border: 5px solid blue;
      margin: 30px;
    }
  </style>
</head>
<body>
  <div class="box">Box Model Example</div>
</body>
</html>
  </textarea>
  <button onclick="runCode('box1', 'outbox1')">Run Code</button>
  <iframe id="outbox1"></iframe>

  <h3>2. Box Sizing</h3>
  <p><strong>Explanation:</strong> By default, width sirf content ke liye hoti hai. Agar aap <code>box-sizing: border-box</code> lagao, to padding + border bhi width me include ho jaata hai.</p>

  <textarea id="box2">
<!DOCTYPE html>
<html>
<head>
  <style>
    .box1, .box2 {
      width: 300px;
      padding: 20px;
      border: 5px solid black;
      margin: 10px;
    }
    .box1 {
      box-sizing: content-box;
      background-color: lightcoral;
    }
    .box2 {
      box-sizing: border-box;
      background-color: lightgreen;
    }
  </style>
</head>
<body>
  <div class="box1">Content-box (default)</div>
  <div class="box2">Border-box</div>
</body>
</html>
  </textarea>
  <button onclick="runCode('box2', 'outbox2')">Run Code</button>
  <iframe id="outbox2"></iframe>

  <h3>3. Overflow Property</h3>
  <p><strong>Explanation:</strong> Jab content box ke andar fit nahi hota, tab <code>overflow</code> property usse control karti hai. Values ho sakti hain: <code>visible</code>, <code>hidden</code>, <code>scroll</code>, <code>auto</code>.</p>

  <textarea id="box3">
<!DOCTYPE html>
<html>
<head>
  <style>
    .container {
      width: 200px;
      height: 100px;
      border: 2px solid black;
      overflow: scroll;
      background-color: #fef4c4;
    }
  </style>
</head>
<body>
  <div class="container">
    This is a long content that will overflow from the box. Scroll to see full content inside the box.
  </div>
</body>
</html>
  </textarea>
  <button onclick="runCode('box3', 'outbox3')">Run Code</button>
  <iframe id="outbox3"></iframe>
</div>

<script>
function runCode(textareaId, iframeId) {
  const code = document.getElementById(textareaId).value;
  const iframe = document.getElementById(iframeId);
  iframe.contentDocument.open();
  iframe.contentDocument.write(code);
  iframe.contentDocument.close();
}
</script>

</body>
</html>