Drawing angled lines in CSS

问题

What I'm trying to do LOOKS simple, but I can't seem to figure out how to do it.

As you can see in my image there are a couple of red lines that go across the bottom, then bend upwards close to the right side.

Is there a way in CSS to draw a line like this?

回答1:

You can create angled lines in CSS by using skew transforms (transform: skew(Xdeg)). Below is a sample snippet:

.shape {
  height: 50px;
  width: 200px;
  border-bottom: 2px solid red;
  border-right: 2px solid red;
  -moz-transform: skew(-45deg);
  -webkit-transform: skew(-45deg);
  transform: skew(-45deg);
}

<div class="shape"></div>

---

Double line with one above the content area and one behind it can also be done using a single element (and a couple of pseudos) like in the below snippet:

.shape:before {
  position: absolute;
  bottom: -5px;
  left: -5px;
  content: '';
  height: 50px;
  width: 100%;
  border-bottom: 3px solid red;
  border-right: 4px solid red;
  -webkit-transform: skew(-45deg);
  -moz-transform: skew(-45deg);
  transform: skew(-45deg);
}
.shape:after {
  position: absolute;
  content: '';
  bottom: -10px;
  left: 0px;
  height: 55px;
  width: 100%;
  border-bottom: 3px solid red;
  border-right: 4px solid red;
  -webkit-transform: skew(-45deg);
  -moz-transform: skew(-45deg);
  transform: skew(-45deg);
  z-index: -1;
}
.shape {
  position: relative;
  height: 80px;
  width: 400px;
  background: whitesmoke;
}

<div class="shape">
  Some text that goes within the element...
</div>

来源：https://stackoverflow.com/questions/29982414/drawing-angled-lines-in-css