.header {
    background-image: url("../img/chattt.jpg");
    background-repeat: no-repeat;
    background-position: left;
    background-size: cover;
    width: 202px;
    height: 50px;
  }

.header-container{
    position: relative;
    box-shadow: 0px 5px 5px 0px #adb5bd;
}