.rwmb-background-row {
margin-bottom: 5px;
display: flex;
flex-wrap: wrap;
align-items: flex-start;
}
.rwmb-background-wrapper .wp-picker-container {
position: relative;
display: inline-block;
vertical-align: top;
}
.rwmb-background-wrapper .wp-picker-holder {
position: absolute;
z-index: 9;
min-width: 255px;
}
.rwmb-background-wrapper .rwmb-select {
flex: 1;
margin-bottom: 5px;
max-width: 100%;
}