service.css

ul {
    list-style-type: none;
    background-color: #333;
    overflow: hidden;
}
li{
    float: left;
}
li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
li a:hover:not(.active){
    background-color: darkgrey;
}

.active {
    background-color: cornflowerblue;
}

#search label{
    color: steelblue;
    border-style: solid;
    border-width: thin;
    border-color: teal;
    padding: 10px;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    margin-left: 40px;
}
#search input{
    width: 60%;
    height: 39px;
    padding-left: 10px;
    margin-left: 10px;
}
#addbtn{
    margin-left: 10px;
    height: 43px;
    background-color: cadetblue;
    color: white;
    font-family: monospace;
}
#searchbtn:hover{
    background-color: darkviolet;
}
#addbtn:hover{
    background-color: darkviolet;
}
#table{
    padding-top: 20px;
}
#table table{
    border-collapse: collapse;
    width: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
#table th, td{
    text-align: left;
    border: 1px solid slategrey;
    padding: 5px;
}
#table th{
    color: cornsilk;
    background-color: gray;
    padding-top: 12px;
    padding-bottom: 12px;
}
tr:hover{
    background-color: darkseagreen;
}