.accordian {
    position: relative;
    box-sizing: border-box;
}

.accordian > section.item {
    position: relative;
    box-sizing: border-box;
    height: 0;
    overflow: hidden;
    background-color: rgba(255,255,255,0.8);
    border-bottom: 1px solid rgba(0,0,0,1);
    transition: height var(--transition-duration);
}

.accordian > section.item.open {
    /* background-color: rgba(255,255,255,1); */
}

.accordian > section.item > .title {
    position: relative;
    box-sizing: border-box;
    height: auto; /* height of item bar */
    min-height: 4rem;
    cursor: pointer;
}

.accordian > section.item .title::after {
    content: '';
    position: absolute;
    box-sizing: border-box;
    width: 1.6rem; height: 1.6rem;
    right: 3rem; top: 50%; 
    transform: translate(50%,-50%) rotate(90deg);
    transform-origin: center;
    transition: opacity var(--transition-duration), transform var(--transition-duration);
    background-image: url(images/arrow.svg);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.accordian > section.item.open  .title::after {
    transform: translate(50%,-50%) rotate(180deg);
}

.accordian > section.item > .content {
    position: relative;
    box-sizing: border-box;
    height: auto;
    opacity: 0;
    overflow: hidden;
    transition: opacity var(--transition-duration);
    padding: 0 4rem 3.2rem 5.8rem;
}

.accordian > section.item.open > .content {
    opacity: 1;
}