.header {
    position: fixed;
    width: 100%;
    height: 80px;
    z-index: 300;
    top: 0;
    box-shadow: -1px 0px 10px rgb(0, 0, 0, 0.3);
}

.header-nav {
    width: 1200px;
    height: 100%;
    display: flex;
    align-items: center;
    margin: 0 auto;
}

.header-img-box {
    width: 230px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-img-box img {
    height: auto;
}

.header-list {
    flex: 1;
    display: flex;
    align-items: center;
    font-size: 16px;
}

.header-list li {
    width: 120px;
    text-align: center;
}

.header-list li span {
    padding: 5px 0;
    position: relative;
    border-bottom: 2px solid transparent;
}

.header-list li.active span {
    border-bottom-color: #2196f3;

}

.header-list li.active,
.header-list li:hover {
    color: #2196f3;
    font-weight: 600;
}

.header-btn-box {
    width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-btn-box .btn {
    width: 100%;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #008dfe;
    border-color: #008dfe;
    color: #ffffff;
    font-size: 14px;
    border-radius: 5px;
}

.header-btn-box .btn:hover {
    background: #66b1ff;
    border-color: #66b1ff;
}