<div class="nomerabriz__nomer">
           
            <div class="nom-text">
                <br><br><br>
                <span>Номер</span><br>
                
                Описание номера
               
            </div>
            <div class="nom-img">
                <img src="https://static.1000.menu/img/content/21458/-salat-cezar-s-kr-salat-cezar-s-krevetkami-s-maionezom_1501173720_1_max.jpg" width="650px" height="350px" alt="">

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

.nom-img{
position:relative;
float:left;
margin-top: -295px;
margin-left: 500px;
z-index: -1;
}

.nom-text{
    width: 850px;
    height: 250px;
    margin-left: 120px;
    margin-top: 75px;
    background-color: green;
    z-index: 2;
}