html{
background-color: black; 
}

body{
font-family: Arial, sans-serif;
background-color: #2E3A44;
min-height:100%; 
min-height:100vh;
margin: 0;
padding:60px;
}

.background{
position: fixed;
z-index:9990;
background-color:#2E3A44;
width:100%;
height:100px;
top :150px;
left: 0;
}