@keyframes overflow-delay {
    from { overflow: hidden; }
    to { overflow: auto; }
}

span.selector {
    display: inline-block;
    position: relative;
    overflow: visible;
}
span.selector > input[type=text] {
    background-position: right 2px center;
    background-size: 24px 24px;
    background-repeat: no-repeat;
    background-image: url(/img/icons/down.svg);
    padding-right: 28px;
}
span.selector > input[type=text]:hover {
    background-image: url(/img/icons/009922/down.svg);
}

span.selector > .btn-remove {
    display: block;
    opacity: 0;
    visibility: hidden;
    position: absolute;
    left: -24px;
    top: 3px;
    transition: opacity 0.3s ease-in-out;
    border: none;
}
span.selector:hover > .btn-remove  {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease-in-out;
}

span.selector > .selector {
    display: block;
    position: absolute;
    visibility: hidden;
    top: 100%;
    left: 0;
    margin: 5px 0 0 0;
    width: 100%;
    height: auto;
    min-height: 0;
    max-height: 0;
    border: solid 1px #7BA4CC;
    background: white;
    z-index: 9000;
    overflow: hidden;
    transition: max-height 0.4s linear, visibility 0.4s linear;
}
span.selector > input[type=text]:focus + .selector,
span.selector > input[type=text]:active + .selector,
span.selector > .selector.active {
    visibility: visible;
    max-height: 560px;
    transition: max-height 0.4s linear;
}
span.selector > .selector > .nav-selector {
    display: block;
    margin: 0;
    overflow: hidden;
    max-height: 560px;
}
span.selector > .selector.active > .nav-selector,
span.selector > input[type=text]:focus + .selector > .nav-selector,
span.selector > input[type=text]:active + .selector > .nav-selector {
    overflow: auto;
    animation-duration: 0.5s;
    animation-name: overflow-delay;
}
span.selector > .selector > .nav-selector > li {
    display: block;
    padding: 5px;
    margin: 0;
    cursor: default;
    border-bottom: solid 1px #DDD;
    background-color: #FFFFFF;
    color: #000000;
}
span.selector > .nav-selector > li:hover {
    background-color: #7BA4CC;
    color: #FFFFFF;
}
span.selector > .selector-top ~ .selector {
    top: auto;
    bottom: 100%;
}