:root {
    --hover-color-accordion: hsl(38deg 35% 94%);
}

.accordion {
    cursor: pointer;
    width: 100%;
    text-align: left;
    border: none;
    outline: none;
    transition: 0.4s;
}

.expand_panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    font-family: inherit;
}

.active>.side-item-title_wrapper {
    border-bottom: 2px solid var(--hover-color-accordion);
}

.active>.side-item-title_wrapper::after {
    content: none;
}

/* accordion icon */
.accordion-icon .b3 {
    /* position: relative; */

}

.accordion-icon {
    position: relative;
    right: 3rem;
    top: 7px;
}

/* .accordion-icon>div.b3, */
.accordion-icon .b3::before,
.accordion-icon .b3::after {
    position: absolute;
    content: "";
    display: block;
    width: 10px;
    height: 2px;
    border-radius: 15px;
    margin-top: 5px;
    background-color: hsl(38deg, 33%, 23%);
    transition: transform 400ms ease-out, all 300ms ease;
}

/* .accordion-icon>div.b3 {} */

.accordion-icon .b3::before {}

.accordion-icon .b3::after {
    transform: rotate(90deg);
}

.active>.side-item-title_wrapper .accordion-icon .b3::after {
    transform: rotate(180deg);
}

.active>.side-item-title_wrapper .accordion-icon .b3::before {
    transform: rotate(180deg);
}