body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #f4f4f4;
    overflow: hidden;
}

select {
    margin: 10px;
    padding: 5px;
    font-size: 16px;
}

#app {
    display: flex;
    flex: 1;
    width: 100vw;
    gap: 30px;
}

#feed-list, #article-view {
    flex: 1;
    padding: 20px;
    background: white;
    overflow-y: auto;
    max-height: 100dvh;
}

#article-view {
    font-family: "IBM Plex Serif", serif;
    background-color: #faf8f6;
}

#article-view img {
    max-width: 100%;
    height: auto;
}

h2 {
    margin-top: 0;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    padding: 10px;
    border-bottom: 1px solid #ddd;
    cursor: pointer;
}

li:hover {
    background: #e0e0e0;
}