* { box-sizing: border-box; }

body {
    background-color: #c0c0c0;
    color: black;
    font-family: "Courier New", Courier, monospace;
    padding: 15px;
    margin: 0;
}

.box {
    background: #c0c0c0;
    border: 2px solid;
    border-color: #ffffff #808080 #808080 #ffffff;
    padding: 15px;
    margin-bottom: 15px;
}

.box-inset {
    border: 2px solid;
    border-color: #808080 #ffffff #ffffff #808080;
    background: white;
    padding: 10px;
}

button {
    background: #c0c0c0;
    border: 2px solid;
    border-color: #ffffff #808080 #808080 #ffffff;
    padding: 5px 20px;
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
}

button:active {
    border-color: #808080 #ffffff #ffffff #808080;
    transform: translate(1px, 1px);
}

input, select, textarea {
    border: 2px solid;
    border-color: #808080 #ffffff #ffffff #808080;
    padding: 5px;
    width: 100%;
    font-family: inherit;
    background: white;
}

.navbar {
    background: #000080;
    color: white;
    padding: 10px;
    border: 2px solid white;
    margin-bottom: 20px;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
}
.navbar a { color: white; text-decoration: none; margin-right: 15px; }
.navbar a:hover { background: white; color: #000080; }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; border-bottom: 2px solid black; padding: 5px; }
td { border-bottom: 1px solid #808080; padding: 5px; }

.row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.col {
    flex: 1;
    min-width: 300px;
}

.col-sidebar {
    width: 250px;
    flex-shrink: 0;
}

.text-right { text-align: right; }
h1, h2, h3 { margin-top: 0; text-transform: uppercase; }
label { display: block; margin-bottom: 5px; font-weight: bold; }