Question

I am making overlay effect but problem is overlay div is not wrapping all the divs inside. Overlay background is visible but divs are also visible outside of overlay div.

CSS

.overlay_effect {
    background-color: rgba(0,0,0,0.5);
    z-index: 2;
}

.overlay_effect {
	background-color: rgba(0,0,0,0.5);
    z-index: 2;
}

.columns_sum {
    width: 340px;
    padding: 8px;
}


.price {
    list-style-type: none;
	border: 1px solid #22ADE3;
    margin: 0;
    padding: 0;
    -webkit-transition: 0.3s;
    transition: 0.3s;
	overflow: hidden;
}


.price .header {
    background-color: #22ADE3;
	color: #fff;
    font-size: 13px;
    padding: 10px;
}


.price li {
    padding: 7px;
    text-align: center;
}

li:nth-child(4) {
	border-right: 1px solid #22ADE3;
}


.price .grey_price {
	float: left;
	width: 50%;
    background-color: #eee;
    font-size: 13px;
	border-right: 1px solid #22ADE3;
	border-bottom: 1px solid #22ADE3;
}


.price .grey_price_right {
	float: left;
	width: 50%;
    background-color: #eee;
    font-size: 13px;
	border-bottom: 1px solid #22ADE3;
}

.coverage_left {
	float: left;
	width: 50%;
	font-size: 13px;
	border-bottom: 1px solid #22ADE3;
}

.avl_text {
	display: inline-block;
	text-align: justify !important;
	font-size: 13px;
}

<div class="columns_sum">
  <div class="overlay_effect">
    <ul class="price">
      <li class="header">Dummy text</li>
      <li class="grey_msg">Dummy text</li>
      <li class="coverage_left">Dummy Text</li>
      <li class="coverage_left">Dummy Text</li>
      <li class="avl_text">Availability: Lorem ipsum dolor sit amet, consectetuer adipiscing elit. In rutrum. Praesent dapibus. Phasellus et lorem id felis nonummy placerat. Nulla non lectus sed nisl molestie malesuada.</li>
    </ul>
  </div>
</div>

Answer 1

For an overlay that covers the content of a host element (here: div.columns_sum) simply use a pseudo element ::after:

.columns_sum::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,.5);
}

For the positioning to work properly, you need to add position: relative; to the element that hosts ::after:

.columns_sum {
  position: relative;
}

Otherwise the absolute positioning refers to the closest positioned ancestor element (and if there is none, the body).

.columns_sum {
  width: 340px;
  padding: 8px;
  position: relative;
}

.columns_sum::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,.5);
}

.price {
  list-style-type: none;
  border: 1px solid #22ADE3;
  margin: 0;
  padding: 0;
  transition: 0.3s;
  overflow: hidden;
}

.price .header {
  background-color: #22ADE3;
  color: #fff;
  font-size: 13px;
  padding: 10px;
}

.price li {
  padding: 7px;
  text-align: center;
}

li:nth-child(4) {
  border-right: 1px solid #22ADE3;
}

.price .grey_price {
  float: left;
  width: 50%;
  background-color: #eee;
  font-size: 13px;
  border-right: 1px solid #22ADE3;
  border-bottom: 1px solid #22ADE3;
}

.price .grey_price_right {
  float: left;
  width: 50%;
  background-color: #eee;
  font-size: 13px;
  border-bottom: 1px solid #22ADE3;
}

.coverage_left {
  float: left;
  width: 50%;
  font-size: 13px;
  border-bottom: 1px solid #22ADE3;
}

.avl_text {
  display: inline-block;
  text-align: justify !important;
  font-size: 13px;
}

<div class="columns_sum">
  <ul class="price">
    <li class="header">Dummy text</li>
    <li class="grey_msg">Dummy text</li>
    <li class="coverage_left">Dummy Text</li>
    <li class="coverage_left">Dummy Text</li>
    <li class="avl_text">Availability: Lorem ipsum dolor sit amet, consectetuer adipiscing elit. In rutrum. Praesent dapibus. Phasellus et lorem id felis nonummy placerat. Nulla non lectus sed nisl molestie malesuada.</li>
  </ul>
</div>

Answer 2

You can put the overlay as a child element of the <div class="columns_sum"> and not the parent of the ul list

<div class="columns_sum">
    <div class="overlay_effect">
    </div>
    <ul class="price">
      <li class="header">Dummy text</li>
      <li class="grey_msg">Dummy text</li>
      <li class="coverage_left">Dummy Text</li>
      <li class="coverage_left">Dummy Text</li>
      <li class="avl_text">Availability: Lorem ipsum dolor sit amet, consectetuer adipiscing elit. In rutrum. Praesent dapibus. Phasellus et lorem id felis nonummy placerat. Nulla non lectus sed nisl molestie malesuada.</li>
    </ul>
</div>

after that put the parent element in the relative position like this

.columns_sum {
    position:relative;
    /* and all other code to style this element goes here */
}

and the overlay_effect element will be put in the position absolute

.overlay_effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%; 
    z-index: 100;
}

this will put the overlay_effect element over all other child within the .columns_sum element

Overlay does not wrapping all the div css

2 个答案: