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HTML

CSS

CSS Base

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Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

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HTML

              
                <img src="https://image.freepik.com/icones-gratis/facebook_318-136394.jpg" alt="Logo do facebook" />

<br /><br />

<input type="checkbox" />

<br /><br />

<a href="http://mathmesquita.me/" title="link para o site do mathmesquita">link para meu blog com title contendo mathmesquita</a>

<br /><br />

<a href="https://mathmesquita.me/" title="https-é indicado para o meu blog">link para meu blog com title começando com https</a>

<br /><br />

<div class="galleryBig">
  div começando com classe gallery
</div>

<img class="galleryItem" src="http://www.mrpatel.net/IMAGES/JavaScript.png" />
<div>
  imagem com classe galleryItem e sem atributo alt
</div>

<br /><br />

<a href="http://www.yugioh-card.com/ygo_cms/ygo/all/uploads/Rulebook_v9_pt.pdf" target="_blank">link para um arquivo .pdf</a>

<br /><br />

<img src="https://image.freepik.com/icones-gratis/paisagem-das-montanhas-no-dia-ensolarado_318-74296.jpg" alt="icone com montanhas e um sol" />
              
            
!

CSS

              
                *{font-family: Verdana;}

/* seleciona todas as imagems com atributo alt e bota borda azul */
img[alt]{
  border: 4px solid blue;
}

/* seleciona todos os inputs com type checkbox e os aumenta*/
input[type="checkbox"]{
  width: 100px;
  height: 100px;
}

/* seleciona todos os links que tenham a palavra mathmesquita no atributo title e deixa a cor da letra vermelha */
a[title~='mathmesquita']{
  color: red;
}

/* seleciona todos os links que comecem com a palavra 'https', separada da próxima palavra por hífen, no atributo title e deixa com o fundo preto */
a[title|="https"]{
  background: #000;
  color: #fff;
}

/* seleciona todos os elementos do DOM que possuem a classe começando com a string 'gallery' e adiciona uma borda verde*/
[class^="gallery"]{
  border: 3px solid green;
}

/* seleciona todos os links que o atributo href termina com .pdf e deixa a cor vermelha com fundo preto */
a[href$=".pdf"]{
  color: red;
  background: #000;
}

/* seleciona todas as imagems que possuem a palavra montanhas no seu atributo alt e deixa a cor da borda amarela*/
img[alt*="montanhas"]{
  border-color: yellow;
}
              
            
!

JS

              
                
              
            
!
999px

Console