/*：源代码唯一下载链接: http://www.bootstrapmb.com/item/3677(当前备注仅在演示里出现，下载源码不包含)*/html,body {  overflow-x: hidden; /* Prevent scroll on narrow devices */}@media (max-width: 991.98px) {  .offcanvas-collapse {    position: fixed;    top: 116px; /* Height of navbar */    bottom: 0;    left: 100%;    width: 100%;    padding-right: 0px;    padding-left: 0px;    overflow-y: auto;    visibility: hidden;    background-color: #fff;    transition-timing-function: ease-in-out;    transition-duration: .3s;    transition-property: left, visibility;    z-index: 2000;  }  .offcanvas-collapse.open {    left: 0;    visibility: visible;    position: absolute;    top:0;       }}}/*：源代码唯一下载链接: http://www.bootstrapmb.com/item/3677(当前备注仅在演示里出现，下载源码不包含)*/