ul li:hover > ul {
    display: block;
}

ul ul li {
    float: none;
    position: relative;
}
.proContext{
    text-align: center;
}
.proContext h4{
    padding-bottom: 10px;
}
.proContext ul{
    padding-left: 0;
}
.solveContext{
    text-align: center;
    padding: 0;
}
.solveContext h4{
    padding-bottom: 10px;
}
.solveContext ul{
    padding-left: 0;
}
.solveContext ul li{
    padding-bottom: 10px;
}
#serverM{
    color: white;
    background-color: #39ac6a;
}
#newLi #serverM{
    color: white;
    background-color: #39ac6a;
}
#solveList #solve a{
    font-size: 14px;
}