.collase_panel .panel-heading {
    width: 100%;
    text-align: left;
    padding: 5px 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.collase_panel .panel-heading .titles{
    display: flex;
}

.collase_panel .panel-heading .titles .number {
    margin-left: 10px;
}