* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-family: sans-serif;
    font-size: 16px;
}

body {
    width: 100%;
    background: #F7F8F9;
}

main {
    padding: 0 1rem;
}

nav {
    width: 100%;
    background: #0F4B85;
    display: flex;
    justify-content: space-between;
}

nav > a:first-child {
    padding-left: 0;
}

nav ul {
    display: flex;
    list-style-type: none;
}

nav input[type="submit"] {
    background: transparent;
    border: none;
    font-size: initial;
    margin: 0;
    cursor: pointer;
}

nav a, nav input[type="submit"] {
    display: block;
    padding: 1rem;
    line-height: 1rem;
}

nav a, nav input[type="submit"] {
    color: #FFF;
    text-decoration: none;
}

nav ul a:link:hover,
nav ul input[type="submit"]:hover {
    background: #333;
}

main {
    padding-top: 2rem;
}

main > * {
    margin-bottom: 2rem;
}

#login-form input[type="submit"] {
    background: #FA0;
    color: #000;
    border: 2px solid #000;
    padding: 0.5em;
    cursor: pointer;
    border-radius: 4px;
    box-shadow: #000 2px 2px;
}

#login-form input[type="submit"]:hover {
    background: #FB0;
    box-shadow: #000 3px 3px;
}

ul#site-list {
    max-width: 1280px;
    display: flex;
    flex-wrap: wrap;
    list-style-type: none;
}

ul#site-list li {
    margin: 0 1rem 1rem 0;
    padding: 0;
    width: calc(100% / 3 - 3rem);
    background: #EEE;
    border: 1px solid #333;
    border-radius: 0.5rem;
}

ul#site-list li > a {
    display: block;
    background: transparent;
    border-radius: 0.5rem;
    width: 100%;
    padding: 2rem;
    text-decoration: none;
    color: #000;
}

ul#site-list li > a:hover {
    background: rgba(0, 0, 0, 7%);
}