.range_inputs button
{
    display: block;

    width: 100%;
    margin-bottom: 1rem;
}

.picker__nav--prev:before,
.picker__nav--next:before
{
    font-family: 'FontAwesome' !important;
}

.picker__nav--next:before
{
    content: '\f101';
}

.picker__nav--prev:before
{
    content: '\f100';
}