odoo_mobile/src/theme/odoo.scss

$list-header-margin: 0px;
$popover-width: 200px;
$popover-border-radius: 5px;
$button-header-size: 1.8em;
$card-padding: 6px;

ion-list-header {
    margin-bottom: $list-header-margin !important;
}

ion-buttons[start] {
    order: 2;
}

ion-buttons button span ion-icon, ion-item div button span ion-icon {
    padding: 0 6px !important;
    font-size: $button-header-size !important;
}

ion-label h2 {
    word-break: keep-all;
    white-space: normal;
}

ion-card ion-row ion-col button {
    text-transform: none !important;
}

ion-card ion-row ion-col button ion-icon {
    padding: 0 $card-padding !important;
}

.popover-content {
    width: $popover-width !important;
    border-radius: $popover-border-radius !important;
}

.popover-viewport ion-list {
    margin: -1px 0 5px 10px !important;
}