F_A_8_Exchange_app/src/style/components/_leftMenu.scss

.ant-layout-sider-children{
    background: $el-color; 
    height: 110%; 
}
.ant-menu-submenu-title{
    font-size: 20px;
    background: $el-color; 
    margin: 0;
        &:hover {
            background: rgb(223, 111, 98);
            margin: 0;
        }
}
.ant-menu-dark{
    background: $el-color;
}
.ant-layout-sider-trigger {
    position: fixed;
    text-align: center;
    bottom: 0;
    cursor: pointer;
    height: 48px;
    line-height: 48px;
    color: #fff;
    background: #e06b62;
    z-index: 1;
    transition: all 0.2s;
}
.ant-menu .ant-menu-sub .ant-menu-inline{
    & :hover{
        background: #db5b51d2;
    }  
}