html" title=css>css代码附注释
html" title=css>css">*{
/* 初始化 */
margin: 0;
padding: 0;
}
body{
align-content: center;
align-items: center;
background-color: #9f0000;
html" title=css>css代码附注释
html" title=css>css">*{
/* 初始化 */
margin: 0;
padding: 0;
}
body{
align-content: center;
align-items: center;
background-color: #9f0000;