CSS hover effect is not working on my code

hey actually you made the CSS in some other way that’s why browsers doesn’t understand your css code so i made some changes in your css and its working fine on all browsers as per your requirement so i hope this will help you…..

ul li.menunews {
    border-bottom: 1px solid #ccc;  
    list-style:none; 
    height:30px;
}
ul li.menunews a {
    display:block;
    color:#266CAE;
    text-decoration:none;
}
    
ul li.menunews:hover {
    background:#ffffff;
    background:-moz-linear-gradient(top,  #ffffff 0%, #f6f6f6 47%, #ededed 100%); 
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0%,#ffffff), color- stop(47%,#f6f6f6), color-stop(100%,#ededed)); 
    background:-webkit-linear-gradient(top,  #ffffff 0%,#f6f6f6 47%,#ededed 100%); 
    background:-o-linear-gradient(top,  #ffffff 0%,#f6f6f6 47%,#ededed 100%); 
    background:-ms-linear-gradient(top,  #ffffff 0%,#f6f6f6 47%,#ededed 100%);
    background:linear-gradient(to bottom,  #ffffff 0%,#f6f6f6 47%,#ededed 100%); 
    filter:progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#ededed',GradientType=0 );color:#266CAE} 
}

<ul style="font-size:12px;">
    <li class="menunews"><a href="#"><span style="margin-left:2px;">Hello test</span></a></li>
</ul>