header {
    /*オレンジ*/
    /* background-color: #DE5021; */
    /* background-color: #ffc0cb; */
    /* background-color: white; */
    margin-bottom: 20px;
    border-bottom: 1px solid var(--theme-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.system-name {
    margin-left: 16px;
}

.account-menu {
    margin-right: 16px;
    font-size: 14px;
}

.account-menu a {
    color: var(--link-color);
    text-decoration: none;
}

ul.user-menu {
    display: none
}

ul.user-menu.active{
    display: block;
    position: absolute;
    top: 40px;
    background-color: white;
    list-style: none;
    padding: 8px;
    margin: 8px;
    right: 100px;
    border: 1px solid #DE5021;
    border-radius: 5px;
}

ul.user-menu.active li > * {
    display: block;
}

ul.user-menu.active li *:hover {
    background-color: #eee;
}

ul.user-menu.active li a, ul.user-menu.active li button {
     padding: 8px;
}

ul.user-menu.active li a:hover {
    text-decoration: none;
    color: var(--link-color);
}

ul.user-menu.active li button {
    display: block;
    background-color: white;
    color: var(--link-color);
    border: none;
    cursor: pointer;
    text-align: left;
    height: fit-content;
    width: 100%;
}

.account-btn-area {
    display: flex;
    justify-content: space-between;
}

#user-icon {
    cursor: pointer;
}