iOS стиль Checkbox

<div class="popover">  
  <ul>  
  <li class="active"><a href="index.html">Закладки</a></li>  
  <li class="active"><a href="index.html">Пароли</a></li>  
  <li><a href="index.html">Избранное</a></li>  
  <li><a href="index.html">История</a></li>  
  </ul>  
  </div>

.popover {  
  position: relative;  
  z-index: 10;  
  width: 200px;  
  padding: 5px;  
  border: 1px solid #000;  
  border-radius: 11px;  
  background-color: #606060;  
  background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #606060), color-stop(100%, #4a4a4a));  
  background-image: -webkit-linear-gradient(top, #606060, #4a4a4a);  
  background-image: -moz-linear-gradient(top, #606060, #4a4a4a);  
  background-image: -ms-linear-gradient(top, #606060, #4a4a4a);  
  background-image: -o-linear-gradient(top, #606060, #4a4a4a);  
  background-image: linear-gradient(top, #606060, #4a4a4a);  
  -webkit-box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), inset 0 1px 1px rgba(255, 255, 255, 0.2), inset 1px 0 rgba(255, 255, 255, 0.08), inset -1px 0 rgba(255, 255, 255, 0.08), 0 2px 8px rgba(0, 0, 0, 0.5);  
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), inset 0 1px 1px rgba(255, 255, 255, 0.2), inset 1px 0 rgba(255, 255, 255, 0.08), inset -1px 0 rgba(255, 255, 255, 0.08), 0 2px 8px rgba(0, 0, 0, 0.5);  
}  
.popover:before, .popover:after, .popover ul:before {  
  display: block;  
  content: '';  
  width: 0;  
  height: 0;  
  position: absolute;  
  z-index: 11;  
  left: 22px;  
  border: 7px outset transparent;  
}  
.popover:before {  
  border-bottom: 7px solid #000;  
  top: -14px;  
}  
.popover:after {  
  border-bottom: 7px solid #888;  
  top: -13px;  
}  
.popover ul:before {  
  z-index: 12;  
  border-bottom: 8px solid #666;  
  top: -12px;  
}  
.popover ul {  
  overflow: hidden;  
  background: #fff;  
  border: 1px solid #000;  
  border-radius: 7px;  
  -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.4), 0 1px 1px rgba(255, 255, 255, 0.1), 0 1px rgba(255, 255, 255, 0.1);  
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.4), 0 1px 1px rgba(255, 255, 255, 0.1), 0 1px rgba(255, 255, 255, 0.1);  
}  
.popover li {  
  display: block;  
}  
.popover li + li {  
  border-top: 1px solid #eee;  
}  
.popover li:first-child a {  
  border-radius: 7px 7px 0 0;  
}  
.popover li:last-child a {  
  border-radius: 0 0 7px 7px;  
}  
.popover a {  
  position: relative;  
  display: block;  
  line-height: 44px;  
  padding: 0 15px 0 48px;  
  color: #000;  
  font-size: 16px;  
  font-weight: bold;  
}  
.popover a:hover {  
  text-decoration: none;  
  background: #fff;  
  -webkit-box-shadow: 0 0 4px rgba(0, 0, 0, 0.3);  
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.3);  
}  
.popover a:before, .popover a:after {  
  position: absolute;  
  display: block;  
  content: '';  
}  

/* yraaa.ru */  

.popover a:before, .popover .active a:active:before {  
  height: 20px;  
  width: 20px;  
  top: 12px;  
  left: 14px;  
  border: 0;  
  border-radius: 11px;  
  background: #f7f7f7;  
  -webkit-box-shadow: inset 0 1px 1px 1px rgba(0, 0, 0, 0.2), inset 0 5px 5px rgba(0, 0, 0, 0.1);  
  box-shadow: inset 0 1px 1px 1px rgba(0, 0, 0, 0.2), inset 0 5px 5px rgba(0, 0, 0, 0.1);  
}  
.popover a:after, .popover .active a:active:after {  
  display: none;  
  width: 11px;  
  height: 9px;  
  top: 18px;  
  left: 19px;  
  background: url("http://yraaa.ru/test/80/img/tick.png") center center no-repeat;  
}  
.popover .active a:before, .popover a:active:before {  
  top: 11px;  
  left: 13px;  
  border: 1px solid #111;  
  background-color: #555555;  
  background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #777777), color-stop(100%, #404040));  
  background-image: -webkit-linear-gradient(top, #777777, #404040);  
  background-image: -moz-linear-gradient(top, #777777, #404040);  
  background-image: -ms-linear-gradient(top, #777777, #404040);  
  background-image: -o-linear-gradient(top, #777777, #404040);  
  background-image: linear-gradient(top, #777777, #404040);  
  -webkit-box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), 0 1px 2px rgba(0, 0, 0, 0.4);  
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), 0 1px 2px rgba(0, 0, 0, 0.4);  
}  
.popover .active a:after, .popover a:active:after {  
  display: block;  
}