.tabs {
    display: flex;
    border-bottom: 2px solid #ddd;
    margin-bottom: 10px;
}
.tab {
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    background: none;
    font-size: 16px;
}
.tab.active {
    border-bottom: 2px solid blue;
    font-weight: bold;
    color: blue;
}
.tab-content {
    display: none;
    padding: 10px;
}
.tab-content.active {
    display: block;
}