.nav-container {
    position: absolute;
    left: 0;
    width: 100%;
    min-width: 1920px;
    height: 40px;
    background-color: #3498db;
}
.navbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    max-width: 1920px;
    height: 100%;
    background-color: #3498db;
    margin: 0 auto;
    padding: 0;
    color: white;
    font-family: Arial, sans-serif;
    position: relative;
}
#logo {
    position: absolute;
    font-family: 'Ink Free', sans-serif;
    font-size: 24px;
    left: 0;
    font-weight: bold;
    margin-left: 10px;
}
#logo:hover {
    color: #f1c40f;
    cursor: pointer;
}
#nav-list {
    display: flex;
    padding-bottom: 4px;
    position: absolute;
    left: 120px;
    color: #f1c40f;
    cursor: pointer;
}
/* 用户名及下拉箭头样式 */
.user {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.user-name {
    margin-right: 5px;
    padding: 10px 0;
}
.triangle {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid white;
    transition: transform 0.2s;
}
.triangle.up {
    transform: rotate(180deg);
}

/* 下拉菜单样式 */
.dropdown-menu {
    display: none;
    position: absolute;
    top: 35px;
    left: -5px;
    background-color: white;
    color: black;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
    min-width: 100px;
    z-index: 1;
    font-size: 14px;
    text-align: center;
}
.dropdown-menu a {
    display: block;
    padding: 8px 12px;
    text-decoration: none;
    color: black;
}
.dropdown-menu a:hover {
    background-color: #f0f0f0;
}
hr {
    margin: 0 auto;
    width: 98%;
}