SmartHomePHP/web/css/md.select.css

select.md-select {
    height: 41px;
    padding: 8px 16px;
    font-size: 13px;
    width: 100%;
}

.mad-select ::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

.mad-select ::-webkit-scrollbar-track {
    background: transparent;
}

.mad-select ::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 1px;
}

.mad-select ::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.3);
}

.mad-select {
    position: relative;
    vertical-align: middle;
    border-bottom: 1px solid rgba(0, 0, 0, 0.12);
    padding-right: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.mad-select ul {
    list-style: none;
    display: inline-block;
    margin: 0;
    padding: 0;
}

.mad-select ul li,
.md-select-selected-value {
    vertical-align: middle;
    white-space: nowrap;
    height: 24px;
    line-height: 24px;
    display: none;
    padding: 8px 16px;
    margin: 0;
    box-sizing: initial;
}

.mad-select > ul:first-of-type {
    min-width: 120px;
}

.md-select-selected-value {
    flex-grow: 1;
}

.mad-select ul:first-of-type li.selected,
.md-select-selected-value {
    display: inline-block;
    height: 24px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mad-select ul.mad-select-drop {
    position: absolute;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    background: #fff;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    top: 0;
    left: 0;
    transition: 0.24s;
    max-height: 0;
    overflow: hidden;
    overflow-y: auto;
}

.mad-select ul.mad-select-drop.show {
    visibility: visible;
    opacity: 1;
    max-height: 160px; /* COMMENT IF YOU DON?T NEED MAX HEIGHT */
}

.mad-select ul.mad-select-drop li {
    display: block;
    transition: background 0.24s;
    cursor: pointer;
    min-width: 120px;
}

.mad-select ul.mad-select-drop li.selected {
    background: rgba(0, 0, 0, 0.07);
}

.mad-select ul.mad-select-drop li:hover {
    background: rgba(0, 0, 0, 0.04);
}