๐ŸŒˆ CSS Selector

muchogustoยท2020๋…„ 11์›” 6์ผ
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<!DOCTYPE html>
<html>
<style>
/* The container */
.container {
  display: block;
  position: relative;
  padding-left: 35px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 22px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Hide the browser's default checkbox */
.container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

/* Create a custom checkbox */
.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 25px;
  width: 25px;
  background-color: #eee;
}

/* On mouse-over, add a grey background color */
.container:hover input ~ .checkmark {
  background-color: #ccc;
}

/* When the checkbox is checked, add a blue background */
.container input:checked ~ .checkmark {
  background-color: #2196F3;
}

/* Create the checkmark/indicator (hidden when not checked) */
.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

/* Show the checkmark when checked */
.container input:checked ~ .checkmark:after {
  display: block;
}

/* Style the checkmark/indicator */
.container .checkmark:after {
  left: 9px;
  top: 5px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 3px 3px 0;
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}
</style>
<body>

<h1>Custom Checkboxes</h1>
<label class="container">One
  <input type="checkbox" checked="checked">
  <span class="checkmark"></span>
</label>
<label class="container">Two
  <input type="checkbox">
  <span class="checkmark"></span>
</label>
<label class="container">Three
  <input type="checkbox">
  <span class="checkmark"></span>
</label>
<label class="container">Four
  <input type="checkbox">
  <span class="checkmark"></span>
</label>

</body>
</html>

1. ์ผ๋ฐ˜ ํ˜•์ œ ์—ฐ๊ฒฐ์ž (~, ์„ ํƒ๊ธฐ ๋ ˆ๋ฒจ 4)

~
/* On mouse-over, add a grey background color */
.container:hover input ~ .checkmark {
  background-color: #ccc;
}

์˜ˆ์ œ

.a ~ .b

์œ„์˜ CSS ์…€๋ ‰ํ„ฐ".a ~ .b")์˜ ์˜๋ฏธ๋Š”
"a ํด๋ž˜์Šค ๋‹ค์Œ์— ์˜ค๋Š” b ํด๋ž˜์Šค"๋ผ๋Š” ์˜๋ฏธ!
a ํด๋ž˜์Šค ์ด์ „์˜ b ํด๋ž˜์Šค๋Š” ์…€๋ ‰๋˜์ง€ ์•Š์Œ์— ์ฃผ์˜!

"&::placeholder"์—์„œ "::"์€ ๋ฌด์—‡์ธ๊ฐ€?

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