* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
}

.titles {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
}

.titles .icons {
    display: block;
    width: 4px;
    height: 30px;
    margin-right: 5px;
    border-radius: 5px;
    background-color: #1b77f2;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #fff;
    box-shadow: 1px 1px 10px rgba(0, 0, 0, .1);
    padding: 20px 100px;
}

header .logo {
    width: 180px;
}

.logo img {
    width: 100%;
}

body {
    background: #f4f4f5;
}

header nav ul {
    display: flex;
}

header nav ul a {
    font-size: 18px;
    color: #579189;
    padding: 10px 25px;
    display: block;
    border: 1px solid #ccc;
    margin: 0 10px;
    border-radius: 10px 0 10px 0;
}

header nav ul a:hover {
    background-color: blueviolet;
    color: #fff;
}

.main {
    max-width: 1200px;
    margin: 0 auto;
}

.top_hade {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 30px;
    background-color: #579189;
    color: #fff;
}

.icon_list {
    display: flex;
}

.icon_list .icon {
    width: 35px;
    margin-left: 10px;
}

.icon img {
    width: 100%;
}

footer {
    width: 100%;
    background-color: #fff;
    text-align: center;
    padding: 30px 0;
}

.menu {
    align-items: center;
    display: none;
    width: 35px;
}

.menu img {
    width: 100%;
}

@media screen and (max-width:1200px) {
    header {
        padding: 20px 40px;
    }
    .row_list .item {
        width: 33.33% !important;
        height: 230px !important;
    }
    .main {
        width: 96%;
    }
}

@media screen and (max-width:990px) {
    header {
        padding: 20px;
    }
    header .logo {
        width: 140px;
    }
    header nav ul a {
        padding: 8px 20px;
        font-size: 16px;
    }
}

@media screen and (max-width:800px) {
    header nav {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 60vw;
        height: 100vh;
        z-index: 9999999;
        background-color: rgba(255, 255, 255, .9);
        backdrop-filter: blur(5px);
        padding-top: 200px;
    }
    .row_list .item {
        width: 50% !important;
        height: 200px !important;
        padding: 8px!important;
    }
    header nav ul li {
        margin: 10px 0;
    }
    header {
        padding: 10px 15px;
    }
    header nav ul {
        flex-direction: column;
    }
    .menu {
        display: flex;
        position: relative;
        z-index: 99999999;
    }
}

@media screen and (max-width:500px) {
    header nav {
        width: 80vw;
    }
    .row_list .item {
        width: 100% !important;
        height: 220px !important;
        padding: 8px 12px!important;
    }
    header .logo {
        width: 100px;
    }
}