html - :after is not working as expected - CSS

Question

下面是我想要的按钮

JSFIddle

HTML

<div>
    <h5 style="margin: 0;position: relative;" class="right-arrow">LEARN MORE</h5>
</div>

CSS

div {
    background-color: red;
    border-radius: 10px;
    padding: 0.5em;
    float: left;
    position: relative;
}

.right-arrow:after {
    content: '';
    content: '';
    vertical-align: middle;
    border: 20px solid transparent;
    border-left-color: white;
    border-width: 8px 20px;
    position: absolute;
    padding-left: 10px;
}

问题

不知道为什么右箭头要往外...

我不想要的可能解决方案

我不想要固定宽度的 div !!所以 float: left; 在 div 中是需要的。欢迎使用其他解决方案。谢谢

Answer 1

像这样尝试:

div {
background-color: red;
border-radius: 10px;
padding: 0.5em 30px .5em .5em; /* added right padding */
float: left;
position: relative;
}

.right-arrow:after {
  content: '';
  content: '';
  vertical-align: middle;
  border: 20px solid transparent;
  border-left-color: white;
  border-width: 8px 15px;
  position: absolute;
  margin-left: 8px; /* newly added */
}

您需要像这样为背景 div 设置填充 demo