html,
body {
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5ff;
}

main {
    margin-left: 3%;
    margin-right: 3%;
    padding-bottom: 120px;
}

header,
footer {
    background: #0000ff;
    color: #e0e0e0;
    padding: 24px 40px;
    width: 100%;
    box-sizing: border-box;
}

.siteHeader {
    font-size: 20px;
    letter-spacing: 1px;
}

.siteHeaderInner {
    display: flex;
    align-items: baseline;
    gap: 16px;
}

.siteTitle {
    font-size: 22px;
    font-weight: 700;
}

.siteSubtitle {
    font-size: 14px;
    color: #b0b0e0;
}

hr {
    border: none;
    border-top: 1px solid #09ff00;
    margin: 32px 0;
}

h2,
h3 {
    font-weight: 700;
    margin: 0 0 16px;
}

.sectionTitle {
    font-size: 22px;
    margin: 28px 0 20px;
}

.cardGrid {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.cardGridOverflow {
    display: grid;
    grid-template-columns: repeat(4, 240px);
    align-items: start;
    gap: 24px;
}

.cardGridOverflow .userCard {
    height: 260px;
    box-sizing: border-box;
}

/* UserCard */

.userCard {
    background: #fff;
    border: 2px solid #0000ff;
    padding: 24px;
    width: 240px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.userCard:hover {
    border-color: #09ff00;
}

.userCard-avatar {
    width: 80px;
    height: 100px;
    border: 3px solid #0000ff;
    object-fit: cover;
    margin-bottom: 14px;
}

.userCard-name {
    font-size: 18px;
    margin: 0 0 4px;
}

.userCard-bio {
    font-family: 'Arial Narrow Bold', sans-serif;
    font-size: 13px;
    line-height: 1.6;
    color: #444;
    margin: 0 0 16px;
}

.userCard-button {
    background: #0000ff;
    color: #fff;
    border: none;
    padding: 7px 16px;
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    font-size: 13px;
    cursor: pointer;
    letter-spacing: 0.3px;
}

.userCard-button:hover:not(:disabled) {
    background: #09ff00;
    color: #000;
}

.userCard-button:disabled {
    background: #ccc;
    cursor: not-allowed;
}


/* DisplayClass */

span.inline {
    display: inline;
    padding: 5px;
    border: 2px solid red;
}

span.inlineBlock {
    display: inline-block;
    width: 100px;
    height: 35px;
    padding: 5px;
    border: 2px solid red;
}

span.block {
    display: block;
    width: 100px;
    height: 35px;
    padding: 5px;
    border: 2px solid red;
}

span.none {
    display: none;
    width: 100px;
    height: 35px;
    padding: 5px;
    border: 2px solid red;
}

/* Overflow */

.visible {
    overflow: visible;
}

.hidden {
    overflow: hidden;
}

.scroll {
    overflow: scroll;
}

.auto {
    overflow: auto;
}

/* Box Sizing */

.boxSizingGrid {
    display: flex;
    gap: 24px;
}

.boxSizingCard-contentBox {
    box-sizing: content-box;
    width: 240px;
    padding: 24px;
    border: 2px solid #0000ff;
    background: #fff;
}

.boxSizingCard-borderBox {
    box-sizing: border-box;
    width: 240px;
    padding: 24px;
    border: 2px solid #0000ff;
    background: #fff;
}

.pageNavigation {
    text-align: center;
    margin: 60px 0 40px;
}

.actionButton {
    background: #0000ff;
    color: #fff;
    border: none;
    padding: 18px 48px;
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    font-size: 20px;
    cursor: pointer;
    letter-spacing: 1px;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    box-sizing: border-box;
    transition: background-color 0.2s, color 0.2s, transform 0.1s;
}

.actionButton:hover {
    background: #09ff00;
    color: #000;
    transform: scale(1.05);
}

footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    font-size: 14px;
    line-height: 1.8;
    box-sizing: border-box;
}

footer p {
    margin: 0;
}