body,
html {
    margin: 0;
    padding: 0;
    position: relative;
    height: 100%;
    font-family: "Microsoft JhengHei", "Heiti TC", "WenQuanYi Zen Hei", Arial, sans-serif;
    width: 100%;
}

a,
a:hover,
a:focus {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s;
}

.wrapper {
    display: flex;
    align-items: stretch;
    min-height: 100%;
}

.wrapper>* {
    padding-top: 3.5rem !important;
}

#content {
    min-height: 100%;
    padding-bottom: 74px;
}

.breadcrumb .breadcrumb-item {
    line-height: 1.25;
    padding: .5rem 0;
    font-size: 1rem;
}

footer {
    width: 100%;
    background-color: #f5f5f5;
    text-align: left;
    padding-top: 50px;
    position: relative;
    z-index: 2;
}

footer .author {
    font-size: 10px;
}

.bg-black {
    background-color: #393939;
}

.bg-light-black {
    background-color: #545454;
}

.bg-white {
    background-color: #fff;
}

.bg-content-light {
    background-color: #e9e9e9;
}

.text-light {
    color: #e9e9e9;
}

.text-light-black {
    color: #545454;
}

.text-black {
    color: #393939;
}

.line-black {
    border-bottom: 1px solid #b5b5b5;
}

.sumbit-btn {
    cursor: pointer;
    color: #fff;
    background-color: #ffa500;
}

@media (max-width: 768px) {
    footer {
        text-align: center;
    }
}