jquery.dropdown.css

.dropdownjs {
    position: relative;
}
.dropdownjs  * {
    box-sizing: border-box;
}
.dropdownjs > input {
    width: 100%;
}
.dropdownjs > input.focus ~ ul {
    transform: scale(1);
}
.dropdownjs > ul {
    position: absolute;
    padding: 0;
    margin: 0;
    min-width: 200px;
    transform: scale(0);
    z-index: 10000;
}
.dropdownjs > ul[placement=top-left] {
    transform-origin: bottom left;
    bottom: 0;
    left: 0;
}
.dropdownjs > ul[placement=bottom-left] {
    transform-origin: top left;
    top: 0;
    left: 0;
}
.dropdownjs > ul  > li {
    list-style: none;
    padding: 10px 20px;
}


/* Theme */
.dropdownjs > input[readonly] {
    cursor: pointer;
}
select[data-dropdownjs][disabled] + .dropdownjs > input[readonly] {
  cursor: default;
}
.dropdownjs > ul {
    background: #FFF;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.12), 0 1px 6px rgba(0, 0, 0, 0.12);
    transition: transform 0.2s ease-out;
    padding: 10px;
    overflow: auto;
}
.dropdownjs > ul > li {
    cursor: pointer;
}
.dropdownjs > ul > li.selected,
.dropdownjs > ul > li:active {
    background-color: #eaeaea;
}
.dropdownjs > ul > li:focus {
    outline: 0;
    background-color: #d4d4d4;
}