具有线性渐变的三角形中的CSS颜色过渡

Question

I am working on a rectangular background which is divided into 2 triangles by a line from top left to bottom right, as shown in the pic.

What I want to achieve is color transition in each triangle:

1. In triangle ABD: pink becomes darker from left to right
2. In triangle ACD: blue becomes darker from left to right

Note: The width and height are not fixed to 600 and 250. I just use them for demo purpose.

HTML code:

<div class="background-wrapper">
  <p class="float-left">A</p>
  <p class="float-right">B</p>

  <br><br><br><br><br><br><br><br><br><br><br><br><br><br>

  <p class="float-left">C</p>
  <p class="float-right">D</p>
</div>

CSS code:

.background-wrapper {
  position: relative;
  width: 600px;
  height: 250px;
  color: #FFFFFF;
  padding: 20px 50px 80px 50px;
  background: linear-gradient(to left bottom, pink 50%, blue 50%);
}

.float-left {
  float: left;
}

.float-right {
  float: right;
}

Demo jsfiddle here

Answer 1

One posibility, that is cross-browser but that gives washed colors, is to overlay the triangles with a semitransparent gradient that is white on one side and black in the other.

This effect gets much better using blend modes, but the support is lower.

 .test { width: 400px; height: 300px; background-image: linear-gradient(to left, rgba(0,0,0,.5), rgba(0,0,0,0) 40%, rgba(255,255,255,0) 60%, rgba(255,255,255,.5)), linear-gradient(to top right, blue 50%, fuchsia 50%); } 

 <div class="test"></div> 

Answer 2

You can use more colors after you define the linear-gradient position, so you can do stuff like:

background: linear-gradient(to left bottom, deeppink 0%, pink 50%, blue 50%,midnightblue 100%);

Check your updated fiddle

Answer 3

I modified your code quite a bit from the original. I added two new elements to act as the background. May not be the solution you're looking for but off the top of my head this is what works.

Fiddle

 .background-wrapper { position: relative; width: 600px; height: 250px; color: #FFFFFF; padding: 20px 50px 80px 50px; overflow: hidden; } .triangle { position: absolute; top: -65%; right: -30%; width: 125%; height: 125%; transform: rotate(26.5deg); background: linear-gradient(to right, pink, #f44274); } .triangle.bottom { top: initial; right: initial; left: -30%; bottom: -64.8%; background: linear-gradient(to right, blue, navy); } 

 <div class="background-wrapper"> <div class="triangle top"></div> <div class="triangle bottom"></div> </div> 

Answer 4

.background-wrapper {
  position: relative;
  width: 800px;
  height: 450px;
  background: #ffffff;
/* Old Browsers */background: -moz-linear-gradient(45deg, #ffffff 0%, #6176ff 49%, #ff80d9 50%, #ffffff 100%);
 /* FF3.6+ */background: -webkit-gradient(left bottom, right top, color-stop(0%, #ffffff), color-stop(49%, #6176ff), color-stop(50%, #ff80d9), color-stop(100%, #ffffff));
/* Chrome, Safari4+ */background: -webkit-linear-gradient(45deg, #ffffff 0%, #6176ff 49%, #ff80d9 50%, #ffffff 100%);
 /* Chrome10+,Safari5.1+ */background: -o-linear-gradient(45deg, #ffffff 0%, #6176ff 49%, #ff80d9 50%, #ffffff 100%);
 /* Opera 11.10+ */background: -ms-linear-gradient(45deg, #ffffff 0%, #6176ff 49%, #ff80d9 50%, #ffffff 100%);
 /* IE 10+ */background: linear-gradient(45deg, #ffffff 0%, #6176ff 49%, #ff80d9 50%, #ffffff 100%);
/* W3C */filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#ffffff', GradientType=1 );
/* IE6-9 fallback on horizontal gradient */
}

.float-left {
  float: left;
}

.float-right {
  float: right;
}

you can specify the angle in the gradient. Try the above code. it works with width and height.