.vereinsitem {
    margin-bottom: 15px;
}

.vereinsitem > button {
    display: block;
    width: 100%;
    padding: 3px;
    padding-left: 5px;
    padding-right: 5px;
    border: 1px solid #999;
    text-align: center;
    font-size: 100%;
    text-decoration: none;
    color: #6e737a;
    transition: all 0.5s;
    background-color: white;
    background-image: url("images/layout/akkordion_closed.png");
    background-position: right 4px;
    background-size: 32px 28px;
    background-repeat: no-repeat;
    background-origin: border-box;
    padding-right: 40px;
}

.vereinsitem > button:hover {
    background-color: #6e737a;
    color: #94d04d;
}

.vereinsitem > button[aria-expanded="true"] {
    background-image: url("images/layout/akkordion_open.png");
    background-color: #6e737a;
    color: #94d04d;
}