如何使用CSS制作对话框气泡

不言原创: 2018-12-07 11:32:35 4096浏览

我们在和别人通过微信或者qq聊天的时候都会有对话框气泡，那么这个对话框气泡是怎么实现的呢？本篇文章来给大家介绍一下如何使用CSS制作我们经常可以看到的对话框气泡，下面我们来看具体的内容。

首先我们来看一下我们需要制作的对话框的效果

对话气泡

接下来我们就来看看这几种对话气泡的实现方法

我们来看一下如何实现箭头向左的对话气泡

我们需要先来制作一个框架

2345截图20181207105253.png

代码如下

HTML代码

<div class="balloon-left">
左边
</div>

CSS代码

 .balloon-left {
  position: relative;
  display: inline-block;
  padding: 0 15px;
  width: auto;
  min-width: 150px;
  height: 40px;
  line-height: 34px;
  text-align: center;
  background: #44FF44;
  border: 3px solid #000000;
  z-index: 0;
}

接着，我们使用:before来制作箭头部分，用:after来制作箭头的边

CSS代码

.balloon-left:before {
  border-style: solid;
  border-width: 10px 10px 10px 0;
  border-color: transparent #44FF44 transparent transparent;
  content: "";
  position: absolute;
  top: 50%; left: -8px;
  margin-top: -9px;
  display: block;
  width: 0px;
  height: 0px;
  z-index: 0;
}
.balloon-left:after {
  border-style: solid;
  border-width: 11px 11px 11px 0;
  border-color: transparent #000000 transparent transparent;
  content: "";
  position: absolute;
  top: 50%; left: -12px;
  margin-top: -10px;
  display: block;
  width: 0px;
  height: 0px;
  z-index: -1;
}

运行效果入下所示

对话气泡

这样就完成了第一个对话气泡

下面我们就来根据上述方法来制作箭头向右的对话气泡

代码如下

HTML代码

<div class="balloon-right">
  右边
</div>

CSS代码

.balloon-right {
  position: relative;
  display: inline-block;
  padding: 0 15px;
  width: auto;
  min-width: 150px;
  height: 40px;
  line-height: 34px;
  text-align: center;
  background: #44FF44;
  border: 3px solid #000000;
  z-index: 0;
}
.balloon-right:before {
  border-style: solid;
  border-width: 10px 0 10px 10px;
  border-color: transparent transparent transparent #44FF44;
  content: "";
  position: absolute;
  top: 50%; right: -8px;
  margin-top: -9px;
  display: block;
  width: 0px;
  height: 0px;
  z-index: 0;
}
.balloon-right:after {
  border-style: solid;
  border-width: 11px 0 11px 11px;
  border-color: transparent transparent transparent #000000;
  content: "";
  position: absolute;
  top: 50%; right: -12px;
  margin-top: -10px;
  display: block;
  width: 0px;
  height: 0px;
  z-index: -1;
}

运行上述代码的效果如下所示：是一个向右的气泡

2345截图20181207110250.png

最后我们来说箭头向左和向右的对话气泡

我们需要用到border-radius属性让气泡变得圆滑

代码如下

HTML代码

<div class="balloon-top">向上</div>
  <div class="balloon-bottom">向下</div>

CSS代码

.balloon-top {
  position: relative;
  display: inline-block;
  padding: 0 15px;
  width: auto;
  min-width: 150px;
  height: 40px;
  line-height: 32px;
  text-align: center;
  background: #44FF44;
  border: 3px solid #000000;
  z-index: 0;
  border-radius: 60%;
}
.balloon-top:before {
  border-style: solid;
  border-width: 0 10px 10px 10px;
  border-color: transparent transparent #44FF44 transparent;
  content: "";
  position: absolute;
  top: -8px; left: 50%;
  margin-left: -9px;
  display: block;
  width: 0px;
  height: 0px;
  z-index: 0;
}
.balloon-top:after {
  border-style: solid;
  border-width: 0 11px 11px 11px;
  border-color: transparent transparent #000000 transparent;
  content: "";
  position: absolute;
  top: -12px; left: 50%;
  margin-left: -10px;
  display: block;
  width: 0px;
  height: 0px;
  z-index: -1;
}
.balloon-bottom {
  position: relative;
  display: inline-block;
  padding: 0 15px;
  width: auto;
  min-width: 150px;
  height: 40px;
  line-height: 34px;
  text-align: center;
  background-color: #44FF44;
  border: 3px solid #000000;
  z-index: 0;
  border-radius: 60%;
}
.balloon-bottom:before {
  content: "";
  position: absolute;
  bottom: -8px; left: 50%;
  margin-left: -9px;
  width: 0px;
  height: 0px;
  border-style: solid;
  border-width: 10px 10px 0 10px;
  border-color: #44FF44 transparent transparent transparent;
  z-index: 0;
}
.balloon-bottom:after {
  border-style: solid;
  border-width: 11px 11px 0 11px;
  border-color: #000000 transparent transparent transparent;
  content: "";
  position: absolute;
  bottom: -12px; left: 50%;
  margin-left: -10px;
  width: 0px;
  height: 0px;
  z-index: -1;
}

效果如下所示

对话气泡