body{
    font-family: sans-serif;
}

a{
    color: blue;
    text-decoration: none;
}
a:hover{
    text-decoration: underline;
}

table{
    border-collapse: collapse;
}
td, th{
    border: 1px solid black;
    padding: 10px;
}
th{
    background-color: grey;
    color: white;
}
tr:nth-child(odd){
    background-color: lightgrey;
}

td input[type=url]{
    width: 25em;
}

.error{
    color: red;
}
.hrerror{
    border: none;
    border-bottom: 1px solid red;
}

.success{
    color: limegreen;
}
.hrsuccess{
    border: none;
    border-bottom: 1px solid limegreen;
}