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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

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About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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HTML 

              
                <table>
  <caption>Tablo.1 CSS'de Tablo Özellikleri Örneği</caption>
  <tr>
    <th>Birinci Başlık Sütunu</th>
    <th>İkinci Başlık Sütunu</th>
    <th>Üçüncü Başlık Sütunu</th>
  </tr>
  <tr>
    <td>Birinci Satır Birinci Sütun</td>
    <td>Birinci Satır İkinci Sütun</td>
    <td>Birinci Satır Üçüncü Sütun</td>
  </tr>
  <tr>
    <td>İkinci Satır Birinci Sütun</td>
    <td>İkinci Satır İkinci Sütun</td>
    <td>İkinci Satır Üçüncü Sütun</td>
  </tr>
    <tr>
    <td>Üçüncü Satır Birinci Sütun</td>
    <td>Üçüncü Satır İkinci Sütun</td>
    <td>Üçüncü Satır Üçüncü Sütun</td>
  </tr>
    <tr>
    <td>Dördüncü Satır Birinci Sütun</td>
    <td>Dördüncü Satır İkinci Sütun</td>
    <td>Dördüncü Satır Üçüncü Sütun</td>
  </tr>
</table>
!

CSS 

              
                /* Tablo, tablo başlıkları ve tablo dataları için border özelliği*/
table, th, td{
  border:2px solid red;
}

/* Borderları Daraltma */

table{
  border-collapse: collapse;
}

/* Tablo genişlik ve Yükseklikleri */

tr,th{
  width: 200px;
  height: 50px;
}

/* Yatay ve Dikey Hizalama*/
th{
  text-align: center;
  vertical-align: middle;
}

td{
  text-align: left;
  vertical-align: bottom;
}

/* Padding Özellikleri*/

th, td{
  padding-left: 20px;
  padding-right: 50px;
}

/* Hover class'ı atanması */

tr{
  background-color: lightpink;
}

tr:hover{
  opacity: 0.8;
}

/* Satırları Farklı Renkte Yapma
Kaçıncı çocuk elemen değerine even (çift) ve odd (tek)
sayılar olarak seçilmesi sağlanır.
*/

th{
  background-color: lightblue;
  color:white;
}

tr:nth-child(even){
  background-color: lightgreen;
}

/*Caption Özelliğinin Konumu*/

caption{
  margin:10px;
  caption-side:bottom;
}
!

JS
!
999px

Console