.accordion .accordion-item .accordion-button:before {
    content: "⌃";
    display: block;
    font-family: "Material Design Icons";
    font-size: 16px;
    color: #0666db;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    transition: all .5s ease;
}