.wp-block-nea-collapsed-content-wrapper{}

.wp-block-nea-collapsed-content-title
{
    position: relative;
    border-top: solid 1px #000;
    border-bottom: solid 1px #000;
    padding: 1em 0;
    font-weight: bold;
    font-size: 1.2rem;
}

.wp-block-nea-collapsed-content-wrapper .content-end{display: none;}
.wp-block-nea-collapsed-content-wrapper.open .content-end
{
    display: block;
}

.wp-block-nea-collapsed-content-title .icon{
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: inline-block;
    width: 1em;
    height: 1em;
}
.wp-block-nea-collapsed-content-title .icon:after
{
    content: '';
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    width: 70%;
    height: 70%;
    border-style: solid;
    border-width: 0 2px 2px 0;
    border-color: transparent #000 #000 transparent;
    transform: rotate(45deg);
    transition: all 0.3s ease-in-out;
}
.wp-block-nea-collapsed-content-wrapper.open .wp-block-nea-collapsed-content-title .icon:after
{
    transform: rotate(225deg);
    top: 45%;
}

.wp-block-nea-collapsed-content-wrapper.open .content-start{border-bottom: none;}
.wp-block-nea-collapsed-content-wrapper.open .content-end{border-top: none;}

.wp-block-nea-collapsed-content{
}