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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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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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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

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HTML 

              
                <div id="area" style="position:relative; width:600px; height:200px; border-bottom:1px solid green;border-top:1px solid green;margin-bottom:5px;">
  <div id="arrow" style="position:absolute;top:90px;left:10px;"><img src="http://pinusart.com/images/content/demo/arrow.png" width="79" height="22" alt="" title="" /></div>
  <div id="target" style="position:relative;top:20px;float:right;width:20px;margin-right:30px;"><img src="http://pinusart.com/images/content/demo/girl.png" width="31" height="100" alt="" title="" /></div>
</div>
<form>
  <input type="button" value="Oyunu Başlat" onclick="startGame();" />
  <input type="button" value="Oku Fırlat" onclick="throwArrow();" /><br />
  <input type="button" value="Yukarı" onclick="move('up');" /><br />
  <input type="button" value="Aşağı" onclick="move('down');" />
</form>
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CSS
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JS 

              
                function startGame() {
  startOk = 1;
  document.getElementById("target").style.top = randomValue(5, 100) + "px";
  changeLoc = setInterval("setReset()", 5000);
}

function move(dir) {
  if (startOk == 1) {
    var arrowLayer = document.getElementById("arrow");
    currentTop = parseInt(arrowLayer.style.top);

    switch (dir) {
      case "up":
        if (currentTop > 5) {
          arrowLayer.style.top = (currentTop - 5) + "px";
        }
        break;
      case "down":
        if (currentTop < 195) {
          arrowLayer.style.top = (currentTop + 5) + "px";
        }
        break;
    }
  }
}

function throwArrow() {
  if (startOk == 1) {
    var arrowLayer = document.getElementById("arrow");
    arrowLayer.style.left = 510 + "px";
    deadAlive();
  }
}

function deadAlive() {
  var arrow = parseInt(document.getElementById("arrow").style.top);
  var girl = parseInt(document.getElementById("target").style.top);
  var difference = arrow - girl;

  if (difference < 3 && difference > -8) {
    alert("Tam isabet");
    stopGame();
  } else if (difference < -9 || difference > 90) {
    alert("Iskaladınız");
    stopGame();
  } else {
    alert("Geçmişler olsun!!! ");
    stopGame();
  }
}

function stopGame() {
  changeLoc = window.clearInterval(changeLoc);
  document.getElementById("arrow").style.left = 10 + "px";
  startOk = 0;
}

function setReset() {
  document.getElementById("arrow").style.left = 10 + "px";
  document.getElementById("target").style.top = randomValue(5, 100) + "px";
}

function randomValue(start, finish) {
  return Math.floor(Math.random() * (finish - start + 1) + start);
}
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999px

Console