透明形状，带上角的箭头

  • Z时代
  • 2024-01-10
  • 分类：问答

我想在的右上角添加一个箭头，将div其视为

可编辑输入框。请帮助我如何使用CSS实现此目标。我

无法使用SVG，因为我需要使用SVGdiv来将表情符号显示为图像

。

<div placeholder="Your message" id="Message">
...
</div>

回答：

您可以按照下面的代码片段进行操作。实现形状的方法

如下：

主要div元素只有顶部，底部和左侧边框。右边框被取消，因为元素及其箭头需要透明。使用透明箭头，如果存在右边框，也会显示该边框。

使用skew相对于形状右边缘放置的ed元素可实现右侧的箭头。

通过使用另一个伪元素来实现形状的右边界，该伪元素的大小与整个容器的高度相同-箭头伪元素的高度。此元素相对于形状的右下角定位。

您可以根据需要调整高度和边界半径。我已将

位置设置为即使父母的身高/宽度也不会受到影响

div.shape {
  position: relative;
  width: 300px;
  height: 100px;
  padding: 4px;
  margin-top: 20px;
  border: 2px solid gray;
  border-right: none; /* not required as the shape needs to be transparent */
  border-radius: 8px; /* not required as the right border is done through pseudo element */
  border-top-right-radius: 0px;
  border-bottom-right-radius: 0px;
}
div.shape:before {
  position: absolute;
  content: '';
  top: -2px; /* equal to border top of parent - no need to change*/
  right: -6px; /* for positioning - no need to change*/
  height: 15%; /* should be changed depending on height of arrow */
  width: 10%; /* should be changed depending on width of arrow */
  border-top: 2px solid gray;
  border-right: 3px solid gray; /* thicker border because skew makes it thin */
  /* to achieve the arrow like shape */
  -webkit-transform-origin: bottom right;
  -webkit-transform: skew(-45deg);
  -moz-transform: skew(-45deg);
  transform: skew(-45deg);
}
div.shape:after {
  position: absolute;
  content: '';
  right: -6px; /* for positioning - no need to change*/
  height: 85%; /* height of parent - height of arrow */
  width: 2%; /* no need to change */
  bottom: -2px; /* equal to border bottom of parent - no need to change*/
  border-right: 2px solid gray;
  border-bottom: 2px solid gray;
  border-bottom-right-radius: 8px; /* for producing curve on bottom right */
}
/* Just for demo */
body {
  background: -webkit-linear-gradient(0deg, crimson, indianred, purple);
  background: -moz-linear-gradient(90deg, crimson, indianred, purple);
  background: linear-gradient(90deg, crimson, indianred, purple);
}
<div class="shape">
  Lorem Ipsum Dolor Sit Amet...
</div>

可以通过更改定位属性

和偏斜方向（从正角到负角）将箭头添加到左侧，如

下面的代码片段所示。

div.shape {
  position: relative;
  width: 300px;
  height: 100px;
  padding: 4px;
  margin-top: 20px;
  margin-left: 20px;
  border: 2px solid gray;
  border-left: none; /* not required as the shape needs to be transparent */
  border-radius: 8px; /* not required as the right border is done through pseudo element */
  border-top-left-radius: 0px;
  border-bottom-left-radius: 0px;
}
div.shape:before {
  position: absolute;
  content: '';
  top: -2px; /* equal to border top of parent - no need to change*/
  left: -6px; /* for positioning - no need to change*/
  height: 15%; /* should be changed depending on height of arrow */
  width: 10%; /* should be changed depending on width of arrow */
  border-top: 2px solid gray;
  border-left: 3px solid gray; /* thicker border because skew makes it thin */
  /* to achieve the arrow like shape */
  -webkit-transform-origin: bottom right;
  -webkit-transform: skew(45deg);
  -moz-transform: skew(45deg);
  transform: skew(45deg);
}
div.shape:after {
  position: absolute;
  content: '';
  left: -6px; /* for positioning - no need to change*/
  height: 85%; /* height of parent - height of arrow */
  width: 2%; /* no need to change */
  bottom: -2px; /* equal to border bottom of parent - no need to change*/
  border-left: 2px solid gray;
  border-bottom: 2px solid gray;
  border-bottom-left-radius: 8px; /* for producing curve on bottom right */
}
/* Just for demo */
body {
  background: -webkit-linear-gradient(0deg, crimson, indianred, purple);
  background: -moz-linear-gradient(90deg, crimson, indianred, purple);
  background: linear-gradient(90deg, crimson, indianred, purple);
}
<div class="shape">
  Lorem Ipsum Dolor Sit Amet...
</div>

以上是 透明形状，带上角的箭头 的全部内容， 来源链接： utcz.com/qa/406700.html

回到顶部