.spoiler-title{
    color: #0b70db;
    text-decoration: none;
    padding-left: 15px;
    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAJCAYAAADgkQYQAAAANUlEQVQoU2PkLrj9n4EAYAQp+jpBlRGXOpA8hiJ0TaQrwuY2kDNINwnmcKLchO5LuHWEwgkAlO5FBwhFaI8AAAAASUVORK5CYII=) no-repeat 0 50%;
    cursor:pointer;
}
.spoiler-title.active{
    background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAJCAYAAADgkQYQAAAAKklEQVQoU2PkLrj9n4EAYAQp+jpBlRGXOpA8DRRhcxvIGTSyjqDvCIUTAEcINQcERZkIAAAAAElFTkSuQmCC);
    content
}
.spoiler-title>span{
    border-bottom: 1px dashed #0b70db;
    padding:0 3px;
}
.spoiler-title:hover>span{
    border-bottom-style: solid;
}
.spoiler-content{
    display: none;
}