css - 回显的 div id 可在 Safari 中使用，但不适用于 Firefox、Chrome 或 Opera

Question

echo '<div id="header1"></div>';

#header1 {
    background: url(_images/header1.png);
    width: 100%;
    height: 240px;

背景图像出现在 Safari 中，但没有出现在任何其他浏览器中。有谁知道这是为什么以及我该如何解决？

Answer 1

From the above snippet i am just guessing that you have missed closing barcket } but i am not saying its a perfect answer hope so that you have missed to write here or it can be a cause

echo '<div id="header1"></div>';

#header1 {
background: url(_images/header1.png);
width: 100%;
height: 240px;
}