【小知识点】根据文字数量的多少调整样式
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> *{ margin: 0; padding: 0; } .mask{ position: fixed; top: 0; left: 0; right: 0; bottom: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); } .box{ width: 200px; height: 100px; position: absolute; top: 50%; left: 50%; margin-top: -50px; margin-left: -100px; background: #fff; text-align: center; } p{ padding: 10px; text-align: left; display: inline-block; } </style> </head> <body> <div class="mask"> <div class="box"> <p>之前在很多地方看到之前在很多地方看到之前在很多地方看到</p> </div> </div> </body> </html>
效果图如下: