.content_area {
    width: 100%;
    height: 100vh;
    overflow-y: auto;
    padding: 0 0.25rem 0.25rem;
    background-color: gainsboro;
}

.inner_wrapper {
    display: flex;
    flex-direction: column;
    margin-top: 0;
    padding: 1.5rem;
}

.inner_wrapper nav {
    margin-bottom: 1rem;
}

nav .breadcrumb {
    margin-bottom: 0;
}

nav .breadcrumb-item a {
    color: #1c1c1c;
}

/* === Content Header === */
.content_header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.content_header h1 {
    font-size: 24px;
    font-weight: 700;
}

.menu_listing button {
    outline: none;
    border: none;
    background-color: transparent;
    margin-right: 0.25rem;
}

.listing_wrapper {
    margin-top: 0.25rem;
    overflow: auto;
}

/* === Action Area Start === */
.action_area {
    display: flex;
    column-gap: 8px;
    align-items: center;
}

.action_area button {
    background-color: blue;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    visibility: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.action_area button:nth-child(odd) {
    background-color: red;
}

.action_area button i {
    font-size: 12px;
    color: #fff;
}

.action_area:hover button {
    visibility: visible;
}

/*=== Expand / Collapse Button Area ===*/
.menu_controll_area {
    display: flex;
    justify-content: start;
    align-items: center;
}

.menu_controll_area button {
    padding: 8px 10px;
    border: 1px solid black;
    border-radius: 1rem;
}

.menu_controll_area button.active {
    background-color: rgb(9, 41, 57);
    color: #fff;
}

/* === For Inner Childs === */
.relative {
    position: relative;
    transform: scaleY(1);
    transition: all 0.2s ease;
}

.left_v_border {
    position: absolute;
    width: 0.75rem;
    height: 1px;
    top: 0.7rem;
    background: gray;
}

.mini_gap {
    margin-right: 15px;
}

.nested_childs {
    margin-left: 25px;
    border-left: 1px solid gray;
}

/* === Submit Button === */
.submit_btn {
    background-color: rgb(37, 59, 255) !important;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    padding-left: 6rem;
    padding-right: 6rem;
    border-radius: 50px;
}