1.代码如下: HTML <div class="circle"></div> CSS .circle {
border-radius: 50%; width: 2rem; height: 2rem; background: #333; } 实践: circle.html <!DOCTYPE html> <html> <head> <title>css 绘制一个圆</title> <style type="text/css"> .circle {
border-radius: 50%; width: 4rem; height: 4rem; background: #333; } </style> </head> <body> <div class="circle"></div> </body> </html> 效果如下:  实现一个圆附着在容器边框: circle-on-box.html <!DOCTYPE html> <html> <head> <title>css 绘制一个圆</title> <style type="text/css"> #rootApp {
display: flex; } .app {
width: 265px; height: 723px; border: 1px solid #D8DCE2; border-radius: 4px; border-radius: 4px; position: relative; } .circle {
border: 3px solid #2765CF; border-radius: 50%; width: 60px; height: 60px; background: #fff; display: flex; justify-content: center; align-items: center; font-size: 16px; color: #2765CF; position: absolute; bottom: 33px; right: -34px; z-index: 1; } </style> </head> <body> <div id="rootApp"> <div class="app"> <div class="circle">FAQ</div> </div> <div class="app"> <div class="circle">FAQ</div> </div> <div class="app"> <div class="circle">FAQ</div> </div> </div> </body> </html> 效果如下:  效果已经实现, 代码思路: 制作一个圆+绝对定位 后续补充 ... |