* {
    padding: 0;
    margin: 0;
}

header {
    height: 57px;
    background: #32363a;
    position: relative;
}

.logo {
    margin-top: 11px;
    margin-left: 15px;
}

.collapse {
    float: right;
    margin: 16px;
}

.collapse-down {
    display: none;
    position: absolute;
    width: 100%;
    background: #32363a;
    top: 100%;
    z-index: 99;
    box-shadow: 0 4px 8px rgba(135, 135, 135, 0.5);
}

.collapse-product img, .collapse-solve img {
    position: absolute;
    right: 18px;
    top: 18px;
}

.active {
    background: #707274;
}

.collapse-down a {
    text-decoration: none;
}

.collapse-down p {
    color: white;
    font-size: 1rem;
    padding-left: 15px;
    line-height: 45px;
}

.collapse-product, .collapse-solve {
    position: relative;
    color: white;
    font-size: 1rem;
    line-height: 45px;
}

.collapse-product span, .collapse-solve span {
    padding-left: 15px;
}

.collapse-product-down, .collapse-solve-down {
    position: relative;
    top: 100%;
    left: 0px;
    width: 100%;
    background: #d7d7d7;
    display: none;
}

.collapse-product-down p, .collapse-solve-down p {
    color: black;
    font-size: 0.9rem;
    padding-left: 30px;
}

.product-active {
    background: rgba(38, 38, 38, 0.2);
    color: white !important;
}

.copyright {
    height: 40px;
    line-height: 40px;
    color: #6e7072;
    background: #3a3e43;
    font-size: 0.1rem;
    text-align: center;
}