css_背景图片撑开DIV高度

#titleImgDiv{background-image:url(../../../Images/TitleLogo.jpg);background-size:contain;//此处为图片宽高比得比值padding-bottom:78.93%;}之后DIV会扩展下边距使DIV扩大 ,然后处理以下 下边距和DIV高度 使之正常

//获取设备宽高var x = window.screen.width;var y = window.screen.height;//容器高度和屏幕同高$(".container").height(y);var titleImgDiv = document.getElementById("titleImgDiv");var titleImgDivStyle = getComputedStyle(titleImgDiv, null);var titleImgDivHeight= titleImgDivStyle.paddingBottom;$("#titleImgDiv").height(titleImgDivHeight);$("#titleImgDiv").css("padding-bottom","0px");