* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}
#kasu{
    color: white;
    text-align: center;
}
html, body {
    height: 100%;
    margin: 0;
}
main {
    flex: 1;
}
body {
    margin: 0;
    background-color: #f4f6f8;
    color: #333;
    display: flex;
    flex-direction: column;
}
h1 {
    text-align: center;
    margin: 20px 0;
    color: #8696a6;
}
header {
    background-color: #34495e;
    color: white;
    padding: 15px;
    text-align: center;
}
p#nav{
    color: white;
    text-align: center;
    font-variant: small-caps;
    font-family: "Kode Mono", monospace;
    text-decoration: none;
    list-style-type: none;
    margin: 0;
    padding: 1%;
    background-color: #2c3e50;
    overflow: hidden;
    justify-content: center;
    height: 40px;
}
nav ul{
    list-style-type: none;
    margin: 0;
    padding: 0;
    background-color: #2c3e50;
    overflow: hidden;
    display: flex;
    justify-content: center;
    height: 40px;
}
nav ul li{
    float: left;
    border-bottom: 1px double white;
    border-right: 1px double white;
    border-radius: 60px;
}
nav ul li a{
    display: block;
    color: white;
    text-align: center;
    padding: 10px;
    font-variant: small-caps;
    font-family: "Kode Mono", monospace;
    text-decoration: none;
}
nav ul li a:hover{
    text-decoration: underline;
}
table {
    border-collapse: collapse;
    margin: 20px auto;
    width: 80%;
    background-color: white;
}

th, td {
    border: 1px solid #ccc;
    padding: 10px 12px;
    text-align: center;
}

th {
    background-color: #ecf0f1;
    font-weight: bold;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #eef6ff;
}
table a {
    color: #2c3e50;
    text-decoration: none;
    margin: 0 5px;
}

table a:hover {
    text-decoration: underline;
}
form {
    margin: 0;
}

input[type="text"] {
    padding: 6px;
    width: 160px;
    border: 1px solid #bbb;
    border-radius: 4px;
}
input[type="password"] {
    padding: 6px;
    width: 160px;
    border: 1px solid #bbb;
    border-radius: 4px;
}

input[type="submit"] {
    padding: 6px 12px;
    background-color:#2c3e50;
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #3a434d;
}
dl {
    width: 300px;
    margin: 20px auto;
}

dt {
    font-weight: bold;
    margin-top: 10px;
}

dd {
    margin: 5px 0 0 0;
}
.success {
    text-align: center;
    color: green;
    margin: 10px;
}
footer {
    background-color: #34495e;
    color: white;
    text-align: center;
    padding: 10px;
}