Creating a transparent CSS triangle over a background image - html

Question

I'm making a divider over a background image that features a line with a pointer in the middle signifying to look below it. It's all just one line so the divider is not solid. When I made my divider the border of the parent goes through the triangle because the background is transparent.
Just take a look at what I'm trying to explain:
I would like the triangle to hide that line in the middle. This is how I create the divider:
<div class="splash">
<div class="splash-divider">
</div>
</div>
.splash {
background: url("https://unsplash.imgix.net/photo-1416339442236-8ceb164046f8?q=75&fm=jpg&s=8eb83df8a744544977722717b1ea4d09");
height: 200px;
}
.splash-divider {
position: relative;
margin: 20px auto 0 auto;
width: 50%;
height: 30px;
border-bottom: 1px solid #ffffff;
box-shadow: 0px 2px 0px rgba(0, 0, 0, 0.15);
}
.splash-divider:after {
content: "";
position: absolute;
top: 15px;
left: 50%;
width: 30px;
height: 30px;
border-left: 1px solid #ffffff;
border-bottom: 1px solid #ffffff;
box-shadow: -2px 2px 0 rgba(0, 0, 0, 0.15);
transform: rotate(-45deg) translate(-50%, -50%);
-webkit-transform: rotate(-45deg) translate(-50%, -50%);
-ms-transform: rotate(-45deg) translate(-50%, -50%);
-moz-transform: rotate(-45deg) translate(-50%, -50%);
-o-transform: rotate(-45deg) translate(-50%, -50%);
}
As you can see, the parent contains a background image. This would be super simple if it was just a color.
Here's the fiddle.
Edit
Resolved! Here's the working fiddle: http://jsfiddle.net/a9fkh0tp/1/

Answer 1

It is possible, see live demo: http://jsfiddle.net/a9fkh0tp/1/
.splash {
background: url("https://unsplash.imgix.net/photo-1416339442236-8ceb164046f8?q=75&fm=jpg&s=8eb83df8a744544977722717b1ea4d09");
height: 200px;
}
.splash-divider {
position: relative;
margin: 20px auto 0 auto;
width: 50%;
height: 30px;
border-bottom: 1px solid transparent;
}
.splash-divider:after {
content: "";
position: absolute;
top: 15px;
left: 50%;
width: 30px;
height: 30px;
border-left: 1px solid #ffffff;
border-bottom: 1px solid #ffffff;
box-shadow: -2px 2px 0 rgba(0, 0, 0, 0.15);
transform: rotate(-45deg) translate(-50%, -50%);
}
.splash-divider span:before,
.splash-divider span:after {
position: absolute;
top: 0;
display: inline-block;
content: "";
width: 50%;
height: 30px;
border-bottom: 1px solid #fff;
box-shadow: 0px 2px 0px rgba(0, 0, 0, 0.15);
}
.splash-divider span:before {
left: -28px;
}
.splash-divider span:after {
right: -16px;
}
<div class="splash">
<div class="splash-divider"><span></span></div>
</div>
The idea is to divide the single line to 2 parts (left + right). In order to do that, add a <span> into the <div>, so <div class="splash-divider"><span></span></div> we can then play more with it.

Answer 2

You could as well use a method with pseudo elements.
.divider {
padding:1em;
transform:rotate(45deg);
width:0;
margin:auto;
border:2px white solid;
border-top:none;
border-left:none;
position:relative;
box-shadow:1px 1px 1px white;
}
.divider:before, div:after {
content:'';
width:2000px;
border-bottom:2px solid white;
position:absolute;
}
.divider:before {
transform-origin:top left;
bottom:1.9em;
left:2em;
transform:rotate(-45deg);
box-shadow:1px 1px 1px white;
}
.divider:after {
transform-origin:top left;
left:0.05em;
top:2.1em;
transform:rotate(135deg);
box-shadow:1px -1px 1px white;
}
html {
min-height:100%;
background:gray;
background:linear-gradient(to bottom left, gray, yellow,purple, gray, yellow,purple, gray, yellow,purple);
}
<div class="divider"></div>
You can play with it in http://codepen.io/gc-nomade/pen/raYGyO ... add radius, transform, whatever :)

Answer 3

HTML:
<div class="line-separator">
<div class="side-line"> </div>
<div class="triangle"> </div>
<div class="side-line"> </div>
</div>
CSS:
.side-line {
display: inline-block;
border-top: 1px solid black;
width: 20%;
}
.triangle {
display: inline-block;
height: 7px;
width: 7px;
transform: rotate(45deg);
transform-origin: center center;
border-top: 1px solid black;
border-left: 1px solid black;
margin: 0 -3px -3px;
}
Live demo:
http://jsfiddle.net/85saaphw/
If you want the triangle to be upside-down just change the transform: rotate(45deg) arg to 225deg.