css：
.p1{z-index: 1;width: 20;border-top: 5;border-right: 5;border-left: 5;border-bottom: 10;border-color: black}
.p2{font-family: 时尚中黑简体;font-size: 30pt;color: gray;z-index: 2}
html：
得到效果：
如图，文字并没有在图片上面而且图片也不像css里设定的那样有边框，变大，求问为什么？
回复讨论(解决方案)
重发遍图
想要文字在图片上层
要么 P2绝对定位
要么把图片换成p1的背景图都能满足。
而且你的div没有宽高，所以没有边框。
外层加一个div
.p{
position: relative
}
.p2 {
position:absolute
// 设top,left
}
<div class="p"><div class="p1"><img src="/static/imghwm/default1.png" data-src="p1.jpg" class="lazy" alt="div+css想要文字在图片上，图片大小固定_html/css_WEB-ITnose" ></div><div class="p2">sdafdsafdsa</div></div>
可以用相对定位和绝对定位来解决。而且的的border也没有加单位px，下面是修改后的，希望对你有帮助：
<html><head><title></title><link rel=stylesheet type="text/css" href="1.css"><style>.p1{z-index: 1;width:300px;height:200px;border:5px solid black;position:relative;}.p1 img{width:250px;height:180px;}.p2{font-family: 时尚中黑简体;font-size: 30px;color: gray;z-index: 2;position:absolute;left:30px;top:50px;}</style></head><body> <div class="p1"><img src="/static/imghwm/default1.png" data-src="p1.jpg" class="lazy" alt="div+css想要文字在图片上，图片大小固定_html/css_WEB-ITnose" > <div class="p2">sdafdsafdsa</div> </div></body></html> 
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