首页htmlchildren_parentCSS Layout - 如何将子对象与父对象的左上角对齐

CSS Layout - 如何将子对象与父对象的左上角对齐

我们想知道如何将子对象与父对象的左上角对齐。

<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
#first {
  width: 200px;
  height: 100px;
  background-color: blue;
}

#second {
  width: 100px;
  height: 50px;
  background-color: red;
}
</style>
</head>
<body>
  <div id="first">
    <div id="second">
      <div id="third">Nested Div's</div>
    </div>
  </div>
</body>
</html>