jquery.expandable.css

.expandable {
    transition: all 250ms ease-in-out;
}

.expandable .expand-bar {
    position: absolute;
    display: block;
    left: 0px;
    bottom: 0px;
    background-color: white;
    width: 100%;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
    box-sizing: border-box;
    padding-left: 10px;
    padding-right: 30px;
    font-size: 12px;
    text-transform: uppercase;
    line-height: 20px;
}

.expandable .expand-bar::before {
    position: absolute;
    width: 100%;
    height: 20px;
    top: -20px;
    left: 0px;
    display: block;
    content: "";
    background: rgba(237,237,237,0);
    background: -moz-linear-gradient(top, rgba(237,237,237,0) 0%, rgba(255,255,255,0.8) 41%, rgba(255,255,255,1) 70%);
    background: -webkit-gradient(left top, left bottom, color-stop(0%, rgba(237,237,237,0)), color-stop(41%, rgba(255,255,255,0.8)), color-stop(70%, rgba(255,255,255,1)));
    background: -webkit-linear-gradient(top, rgba(237,237,237,0) 0%, rgba(255,255,255,0.8) 41%, rgba(255,255,255,1) 70%);
    background: -o-linear-gradient(top, rgba(237,237,237,0) 0%, rgba(255,255,255,0.8) 41%, rgba(255,255,255,1) 70%);
    background: -ms-linear-gradient(top, rgba(237,237,237,0) 0%, rgba(255,255,255,0.8) 41%, rgba(255,255,255,1) 70%);
    background: linear-gradient(to bottom, rgba(237,237,237,0) 0%, rgba(255,255,255,0.8) 41%, rgba(255,255,255,1) 70%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ededed', endColorstr='#ffffff', GradientType=0 );
}

.expandable .expand-bar i {
    transition: all 250ms ease-in-out;
    position: absolute;
    width: 20px;
    height: 20px;
    display: block;
    top: 50%;
    right: 10px;
    margin-top: -10px;
    transform: rotate(-90deg);
}

.expandable.expanded .expand-bar i {
    transform: rotate(90deg);
}

.expandable .expand-bar i::before, .expandable .expand-bar i::after {
    position: absolute;
    width: 10px;
    height: 1px;
    background: #1d1d1d;
    content: "";
    left: 5px;
}

.expandable .expand-bar i::before {
    transform: rotate(45deg);
    top: 13px;
}

.expandable .expand-bar i::after {
    transform: rotate(-45deg);
    top: 6px;
}