CSS如何添加錨點

1. 在HTML中添加錨點：錨點以一個點號(.)開頭，后面跟著一個或多個元素名。例如：

.link-to-element {

position: relative;

top: 10px;

.link-to-element:after {

content: "";

position: absolute;

top: 20px;

left: 10px;

width: 10px;

height: 10px;

background-color: red;

transform: rotate(-45deg);

transform-origin: 0 100%;

.link-to-element {

display: inline-block;

width: 20px;

height: 20px;

border: 1px solid #ccc;

border-radius: 50%;

cursor: pointer;

.link-to-element:hover {

background-color: #4CAF50;