.menutitle {
    height: 50px;
    display: flex;
    align-content: left;
    font-family: '微软雅黑 Bold', '微软雅黑 Regular', '微软雅黑', sans-serif;
    font-weight: 700;
    font-style: normal;
    margin-left: 20px;
    line-height: 50px; 
    font-size: 20px;
}

.meunleft {
    width: 300px;
    max-height: 700px;
    display: flex;
    flex-direction: column;
    box-shadow: 0px 0px 10px rgb(0 0 0 / 10%);
}

.menuitems {
    height: 50px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    border-width: 0px;
    cursor: pointer;
    font-size: 18px;
    padding-left: 50px;
}

.selectmenu {
    background: inherit;
    background-color: rgba(41, 117, 255, 0.0980392156862745);
    box-sizing: border-box;
    border-width: 4px;
    border-style: solid;
    border-color: rgba(41, 117, 255, 1);
    border-top: 0px;
    border-right: 0px;
    border-bottom: 0px;
    border-radius: 0px;
    border-top-left-radius: 0px;
    border-bottom-left-radius: 0px;
    -moz-box-shadow: none;
    -webkit-box-shadow: none;
    box-shadow: none;
    font-family: '微软雅黑', sans-serif;
    font-weight: 400;
    font-style: normal; 
    color: #666666
}

.menulines{
    margin:0;padding:0; height:1px;background-color:#b3b6ba;overflow:hidden; margin-bottom: 20px;
}