.container-header {
    position: relative;
  	padding: 10px 0;
    z-index: 10;
    margin-bottom: 20px;
	box-shadow: 0 5px 5px rgba(0, 0, 0, 0.03) inset;
	background: #9b2a2a;  /* code généré par https://cssgradient.io */
	background: linear-gradient(90deg,rgba(155, 42, 42, 1) 0%, rgba(192, 199, 87, 1) 50%, rgba(96, 83, 237, 1) 100%);  /* code généré par https://cssgradient.io */
}
.container-header .navbar-brand {margin: auto;}