* {
margin: 0; 
padding: 0;
}

div#banner { 
position: absolute; 
top: 0; 
left: 0; 
background-color: #F46524; 
width: 100%; 
}
div#banner-content { 
width: 800px; 
margin: 0 auto; 
padding: 10px;
color: white;
font-family: Raleway;
/*border: 1px solid #000;*/
}
div#main-content { 
padding-top: 70px;
}

.center {
    margin: auto;
    width: 60%;
    /*order: 3px solid #73AD21;*/
    padding: 20px;
    flex-grow: 1;
}

.container{
    display: flex;
}
.fixed{
    width: 200px;
}
.flex-item{
    flex-grow: 1;
}