<header class="header_body">

            <div class="container">
    
                <div class="header">
    
                    <a href="#" class="logo">
                        лого</a>
            
                    <div class="burger_menu">

                        <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="20" height="16" viewBox="0 0 20 16">
                            <image id="menu" width="20" height="16" xlink:href="data:img/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAQCAYAAAAWGF8bAAAAP0lEQVQ4jWOUUEr+z0BFwMLAwPCR2gYKUNNAJmoaNkINBEUKVZMNTVzISE0DR5MN5QAUKR+obSA/1UxjYGAAAL1LBMg8tVD+AAAAAElFTkSuQmCC"/>
                        </svg>
                        
                    </div>

                    <nav class="nav">

                        <ul>
                            <li class="nav_list">Услуги</li>
                            <li class="nav_list">Специалисты</li>
                            <li class="nav_list">Работы</li>
                            <li class="nav_list">Документы</li>
                            <li class="nav_list">Новости</li>
                            <li class="nav_list">Контакты</li>
                        </ul>
                        
                    </nav>

    
                </div>
    
            </div>
    
        </header>

<div class="block">dskfdsnjf</div>

body{
  background-color: #c1c1;
  margin:0;
  padding: 0;
}

.container{
    width: 100%;
    max-width: 1170px;
    padding: 0 10px;
    margin: 0 auto;
}

.header_body{
    width: 100%;
    height: 80px;
    background-color: #fff;
    display: flex;
    align-items: center;
    position: relative;
}

.header-banner_content{
    display: flex;
    flex-direction: column;
}

.header{
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

a.logo{
    width: 243px;
    height: 50px;
}

.nav {
    width: 65%;
}
.nav ul{
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

li.nav_list{
    font-size: 16px;
    font-family: 'Gilroy-Medium';
    color: #212121;
    list-style: none;
    cursor: pointer;
}

li.nav_list:hover{
    color: #807e7e;
    transition: .3s;
}

.burger_menu{
    display: none;
}

@media (max-width: 1280px){
    .container{
        width: 768px;
    }
    
    a.logo{
        width: 162px;
        height: 33px;
    }
    
    .nav{
        width: 60%;
    }
    
    li.nav_list{
        font-size: 14px;
    }
}

@media (max-width: 860px){
    .burger_menu{
        display: block;   
        cursor: pointer;
    }

    .nav{
        position: fixed;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: #fff;
        left: 0;
        top: 80px;
    }

    .nav ul{
        flex-direction: column;
    }
    .nav ul li.nav_list{
        padding: 10px 0;
    }
    
    .header_body{
        position: absolute;
        z-index: 16;
    }

    .container{
        width: 480px;
    }

    a.logo{
        width: 133px;
        height: 28px;
    }
}

.block{
  width: 500px;
  height: 1000px;
  background-color: black;
}