[data-dropdown-trigger]::after {
    display: inline-block;
    margin-left: 0.255em;
    vertical-align: 0.255em;
    content: "";
    border-top: 0.3em solid;
    border-right: 0.3em solid transparent;
    border-bottom: 0;
    border-left: 0.3em solid transparent;
}

[data-dropdown] {
    position: absolute;
    background: white;
    border: 1px solid #f3f3f3;
    z-index: 99;
}

[data-dropdown] > li {
    padding: 4px 15px;
    line-height: normal;
    cursor: pointer;
}

[data-dropdown] > li:hover {
    background-color: #ebebeb;
}

@media only screen and (max-width: 600px) {
    [data-dropdown] > li { padding: 10px 15px; }
}