.custom-select {
    background-color: #fff;
    color: #666666;
    cursor: pointer;
    font-size: 13px;
    height: 50px;
    position: relative;
    width: 100%;
    z-index: 1;
}

.custom-select .option-selected {
    border: 1px solid #333;
    height: 100%;
    overflow: hidden;
    padding: 15px 10px;
    white-space: nowrap;
}

.custom-select .option-group {
    background: rgba(255, 255, 255, 1);
    border: 1px solid #333;
    border-top: none;
    height: 0;
    left: 0;
    margin-top: -1px;
    opacity: 0;
    overflow: hidden;
    position: absolute;
    top: 100%;
    width: 100%;

    -webkit-transition: opacity 300ms;
    -moz-transition: opacity 300ms;
    -ms-transition: opacity 300ms;
    -o-transition: opacity 300ms;
    transition: opacity 300ms;
}

.custom-select.option-group-open .option-group {
    height: auto;
    opacity: 1;
}

.custom-select .dropdown-button {
    background-color: #fff;
    cursor: pointer;
    height: calc(100% - 2px);
    position: absolute;
    right: 1px;
    top: 1px;
    width: 35px;
}

.custom-select .dropdown-button .icon-down-open-big {
    height: 19px;
    left: 50%;
    margin-left: -9.5px;
    margin-top: -9.5px;
    position: absolute;
    top: 50%;
    width: 19px;
}

.custom-select .dropdown-button .icon-down-open-big:before {
    color: #CB2449;
    font-size: 19px;
    margin: 0;
    opacity: .73;
}

.custom-select .option {
    cursor: pointer;
    padding: 11px;

    -webkit-transition: background 150ms, color 150ms;
    -moz-transition: background 150ms, color 150ms;
    -ms-transition: background 150ms, color 150ms;
    -o-transition: background 150ms, color 150ms;
    transition: background 150ms, color 150ms;
}

.custom-select .option:hover {
    background: #333;
    color: #fff;
}