h1,h2,h3,h4{font-weight:normal;}
a{
text-decoration: none;
}
.aa{
    color: #000000;
}
ul{
    display: block;
    text-align: center;
    margin: 0;
    padding: 0;
    background: #99cccc;
    font-size: 150%;
}
li{
    list-style: none;
    display: inline-block;
    padding: 10px;
    width: 20%;
}
li:last-child{
    margin: 0;
}
li:hover
{
    background-color: #aae4e4;
}

.tdd{
    background: url(../pic/logo-back.jpg);
    background-size:100%;	
    padding-top:10px;
    padding-bottom:10px;
    border: 0px;
}

.tddd{
    background: url(../pic/abb.jpg);
    background-size:100%;	
    padding-top:10px;
    padding-bottom:10px;
    border: 0px;
}