body {
    margin: 0px;
}

a {
    text-decoration: none;
}

a:active {
    color: #0000FF;
}
table, th, td {
    border: 1px solid black;
    border-collapse: collapse;
}

th {
    background: #afd792; 
    color: #333;
}
   
tr:hover {
    background: #87CEEB;
    color: #fff;
}

.mybutton {
    float: left;
    padding: 8px;
    width: 100px;
    height: 27px;
    border: solid 2px #008080;
    border-radius: 10px;
    text-align: center;
    vertical-align: middle;
    color: black;
}

.mybutton:hover {
    background: #87CEEB;
    color: #fff;
}