tbleckert/react-select-search

.container {
    border-radius: 10px;
    background: #ffff;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.05);
    border: 2px solid transparent;
    overflow: hidden;
    transition: .3s border-color;
}

.container:hover {
    border-color: #6779E1;
}

.options {
    list-style: none;
}

.row {
    display: block;
}

.option {
    display: block;
    width: 100%;
    padding: 16px;
    border: none;
    background: none;
    font-family: 'Nunito Sans', sans-serif;
    font-size: 18px;
    text-align: left;
    cursor: pointer;
    transition: .3s background;
    outline: none;
}

.option.is-selected {
    background: rgb(103, 121, 225);
    color: #fff;
}