html, body {
    margin: 0;
    font-family: 'Roboto', 'Noto Sans TC', sans-serif;
}
.spacer {
    flex: 1;
}
.hidden {
    display: none;
}
.site-root {
    display: flex;
    flex-direction: column;
    padding: 0;
    box-sizing: border-box;
    min-height: 100vh;
    margin: auto;
}
.site-footer {
    font-size: smaller;
    text-align: center;
    margin-top: 15px;
}
.site-content {
    flex-grow: 1;
    max-width: 700px;
    margin: auto;
    padding: 0 10px;
}

.site-header {
    display: flex;
    align-items: flex-start;
    border-bottom: 1px solid #ccc;
}
.button-home {
    margin: 5px;
    padding-top: 5px;
    height: 32px;
    background-image: url('../img/logo_v2_32.png');
    background-repeat: no-repeat;
    cursor: pointer;
    text-decoration: none;
    color: #333;
    float: left;
    padding-left: 40px;
    display: flex;
    color: #777;
    font-variant: small-caps;
    align-items: baseline;
}
.button-home:hover {
    color: inherit;
    text-decoration: none;
}
.button-home .word:first-child {
    margin-right: 5px;
}
.word {
    display: flex;
    font-family: 'Roboto';
    align-items: baseline;
    font-size: 15px;
}
.sub {
    font-size: 12px;
}
.signinUser {
    position: relative;
}
.btn-profile {
    display: block;
    margin: 2px 5px;
    border-radius: 3px;
    border: 1px solid #666;
    padding: 2px;
    box-sizing: border-box;
}
.btn-profile img {
    width: 32px;
    height: 32px;
}
.btn-profile:hover {
    background-color: #fdb;
}
.btn-close-bottom {
    background-color: #999;
    color: #fff;
    width: 100%;
    border-radius: 0;
    border: none;
}
.btn-close {
    margin: 15px;
}
.dropdown-menu-right.user-menu {
    right: 5px;
}
.dropdown-menu>li>a {
    line-height: 2em;
}