.custom-select {
    display: inline-block;
    /*width: 100%;*/
    height: calc(2.25rem + 2px);
    padding: .375rem 1.75rem .375rem .75rem;
    line-height: 1.5;
    color: #495057;
    vertical-align: middle;
    background: #fff url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 5'%3E%3Cpath fill='%23343a40' d='M2 0L0 2h4zm0 5L0 3h4z'/%3E%3C/svg%3E") no-repeat right .75rem center;    
    background-size: 8px 10px; 
    border: 1px solid #ced4da; 
    border-radius: .25rem;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.col-form-label {
    padding-top: calc(.375rem + 1px);
    padding-bottom: calc(.375rem + 1px);
    margin-bottom: 0;
    font-size: inherit;
    line-height: 1.5;
}