scabbiaza/css-questions.md

## css-questions.md

      
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              css-questions.md
            
          
Difference between px, em, rem

<style>
  html, body {
    font-size: 10px;
  }
  div {
    font-size: 15px;
  }
  div a {
    font-size: 0.5em;
  }
  div span {
    font-size: 0.5rem;
  }
</style>
<body>
  <div>
    <a>what is my font size?</a>
    <span>what is my font size?</span>
  </div>
</body>


Write a css selector for links without href attribute


How to center a block horizontally and vertically?


Responsive vs Adaptive vs Separate Mobile Site. Difference? Pro and cons?


On the screen with 320px width resolution, will the image be loaded?


<style>
  body {
    background: url("https://farm5.staticflickr.com/4273/34312689953_7a4b3487c3_h.jpg");
  }
  @media screen and (max-width: 480px) {
    body {
      background: green;
    }
  }
</style>
<body>
</body>