.sidenav {
font-family: Arial, Helvetica, sans-serif;
    background: #CD5641;
    display: block;
    left: -500px;
    top: 30%;
    width: 10%;
    border-radius: 10px;
    position: fixed;
    z-index: 3;
    pointer-events: all;
    text-align: right;
    font-size: 1.2rem;
    font-weight: bold;
    line-height: 1.5rem;
    /* 初始位置在屏幕左侧 */
    transition: left 0.5s;
    /* 添加过渡效果 */
}

a.side {
    word-wrap: break-word;
    word-break: keep-all;
    text-align: center;
    text-decoration: none;
    color: white;
    display: inline;
    padding: 0 0px;
    font-size: 1rem;
    font-family: Arial, Helvetica, sans-serif;
}

a.side:hover {
    font-size: 1.2rem;
    text-align: right;
    background-color: transparent;
}

.active111 {
    font-size: 1.2rem !important;

    background-color: transparent;
}

.sidebox {
    display: flex;
    margin: 3% 0% 3% 0%;
    margin-right: 0%;


}

.sideleft {
    flex: 1;
    text-align: center;
}