css3处理sprite背景图压缩来解决H5网页在手机浏览器下图标模糊的问题_html/css_WEB-ITnose

/*  //网页标签：  <a class="control"><span class="car"></span></a>  <a class="control"><span class="position"></span></a>*//* 装载图标的容器，固定宽高，内距设为0 */.control { display: block; text-decoration: none; padding: 0; width: 30px; height: 30px; }/* 图标标签，宽高自动填充 */.car,.position,.zoom-in,.zoom-out {	display: block; 	width: 100%; 	height: 100%; 	background: url(images/map-icon.png) no-repeat;}.car { background-position: 0 0; }.position { background-position: -30px 0; }.zoom-in { background-position: -60px 0; }.zoom-out { background-position: -90px 0; }

高分辨率图像宽度 / 目标图像宽度 = X原始Sprites图像宽度 / x = background-size的宽度值

/* 移动端媒体查询像素比 */@media only screen and (-webkit-min-device-pixel-ratio: 2),only screen and (min--moz-device-pixel-ratio: 2),only screen and (-o-min-device-pixel-ratio: 2/1),only screen and (min-device-pixel-ratio: 2) {.car,.position,.zoom-in,.zoom-out {	background: url(images/map-icon@2x.png) no-repeat;        background-size: 210px auto;}/* 注意这里还是按30像素大小的位置来查找 */.car { background-position: 0 0; }.position { background-position: -30px 0; }.zoom-in { background-position: -60px 0; }.zoom-out { background-position: -90px 0; }}