block_height

HTML

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>Страница Поиска</title>
    <meta name="description" content="Search Snippet">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="main.css">
    <link rel="icon" type="image/x-icon" href="icons/favicon.png">
</head>
<body>
    <header class="page_header">
        <div class="head_wrapper wrapper905">
            <div class="head_logo">
                <a class="head_logo_a" href="">SaySport</a>
            </div>
            <div class="head_right_col">
                <ul class="head_nav">
                    <li class="head_nav_li">
                        <a href="" class="head_nav_a current">Каталог</a>
                    </li>
                </ul>
                <div class="head_profile">
                    <div class="profile_background">
                        <img class="profile_background_img" src=" icons/user_head_placeholder.png">
                    </div>
                </div>
            </div>
        </div>
    </header>
    <main>
        <section class="search_panel">
            <div class="search_wrapper wrapper905">
                <div class="search_panel_menu_dropdown">
                    <img src="icons/burger_menu.png">
                </div>
            </div>
        </section>
    </main>
</body>
</html>

CSS

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
}

.page_header {
    width: 100%;
    height: 50px;
    box-sizing: border-box;
    background: #507299;
    color: #fff;
    min-width: 320px;
    margin-top: 10px;
}

.head_wrapper {
    line-height: 50px;
    overflow: auto;
}

.wrapper905 {
    width: 905px;
    box-sizing: border-box;
    margin: auto;
    border-left: 1px solid #fff;
    border-right: 1px solid #fff;
}

@media (max-width: 905px) {
    .head_wrapper {
        width: 100%;
    }
}

.head_logo {
    width: 250px;
    box-sizing: border-box;
    float: left;
    margin-right: 10px;
    padding: 0 10px;
}

@media (max-width: 750px) {
    .head_logo {
        width: auto;
        margin-right: 20px;
    }
}

.head_logo_a {
    display: inline-block;
    font-size: 26px;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
}

.head_right_col {
    padding-left: 10px;
    overflow: auto;
    position: relative;
}

.head_nav {
    float: left;
    margin: 0;
    padding: 0;
    list-style: none;
}

.head_nav_li {
    display: inline-block;
}

.head_nav_a {
    color: #fff;
    display: block;
    text-decoration: none;
    padding: 0 10px;
    position: relative;
}

.head_nav_a.current::after {
    content: "";
    display: block;
    position: absolute;
    height: 2px;
    width: 100%;
    bottom: 1px;
    left: 0;
    background: #fff;
}

.head_profile {
    float: right;
}

.head_profile::before {
    content: "";
    position: absolute;
    width: 1px;
    height: 40px;
    top: 5px;
    background: #CCCCCC;
}

.profile_background {
    background: #E1E7ED;
    width: 30px;
    height: 30px;
    display: inline-block;
    vertical-align: middle;
    text-align: center;
    line-height: 30px;
    margin: 0 15px;
    transform: translateY(-1px);
}

.profile_background_img {
    vertical-align: middle;
    transform: translateY(-1px);
}

.search_panel {
    width: 100%;
    height: 45px;
   ...