javascript - How to put RGBA background above the image or div area? -


i need use rgba background above grid. used of jquery interect div area. don't know how put background-color in image while i'm using jquery. there way can using jquery ? or other methods ?

// grid function    $(function() {    $(".single_grid").hover(function() {      var panelid = $(this).attr("data-panelid");      $("#" + panelid).css({}).toggle();    })    $(".single_grid").mouseover(function() {      var imageid = $(this).attr("data-imageid");      $("#" + imageid).css({        opacity: "0.3"      })    })    $(".single_grid").mouseleave(function() {      var imageid = $(this).attr("data-imageid");      $("#" + imageid).css({        opacity: "1"      })    })  })
.grid_panel {    width: 100%;    height: auto;  }  #sub_grid_panel {    height: 760px;    margin: 0 auto;    width: 1125px;  }  #sub_grid_panel li {    float: left;  }  .single_grid {    width: 280px;    height: 200px;    overflow: hidden;    position: relative;    top: 0px;    left: 0px;  }  .image_hover_preview h3 {    text-align: center;    display: block;    margin-bottom: 5px;    font-weight: normal;    font-family: 'ralewaylight';    color: #ff8500;  }  .image_hover_preview {    position: absolute;    top: 65px;    width: 100%;    display: none;  }  div.image_hover_preview {    color: #333;    font-size: 20px;    padding: 5px 10px;    background: #ff8500;    color: #ffffff;  }  div.image_hover_preview {    text-align: center;  }
<li class="single_grid" data-panelid="panel1" data-imageid="image1">    <div class="grid_column_bar">      <img src="img/grid/grid1.jpg" alt="" id="image1">      <div class="image_hover_preview" id="panel1">        <h3>lorem ipsum dolor</h3>        <a href=""><i class="fa fa-search-plus"></i></a>        <a href=""><i class="fa fa-link"></i></a>      </div>    </div>  </li>  <li class="single_grid" data-panelid="panel2" data-imageid="image2">    <div class="grid_column_bar">      <img src="img/grid/grid2.jpg" alt="" id="image2">      <div class="image_hover_preview" id="panel2">        <h3>lorem ipsum dolor</h3>        <a href=""><i class="fa fa-search-plus"></i></a>        <a href=""><i class="fa fa-link"></i></a>      </div>    </div>  </li>

i used opacity in image

personally, i'm fan of little box-shadow: inset trick.

just add background , on top of that,
add box-shadow property :

.element {   background-image: url(mybgimage.jpg);   box-shadow: inset 0px 0px 0px 1000px rgba(51,51,51,0.3); }

note: spread-radius of 1000px arbitrarily chosen. make sure exceeds width/height of element.

box shadow generator


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