<div class="box">文字不透明,背景透明</div> <style> *{ padding:0; margin:0; } .box{ background:rgba(255,0,0,0.5); filter:progid:DXImageTransform.Microsoft.gradient(startcolorstr=#FF8080,endcolorstr=#FF8080);/*此时的值为半透明效果后的颜色值*/ height:200px; color:#fff; line-height: 200px; } </style>