* {
    margin: 0;
    padding: 0;
    border: none;
    font-family: Roboto, Helvetica, Arial, sans-serif;
}

body {
    font-size: 14px;
}

ul {
    margin-left: 20px;
}

div {
    display:block;
    position:relative;
}

.content {
    width:100%;
    height:100%;
}

.content > div {
    padding: 20px 10px;
}

.header {
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:auto;
    z-index:30;
}

.sidebar {
    position:fixed;
    left:0;
    top:0;
    width:250px;
    height:100%;
    z-index:20;
}

.content .main {
    width:80%;
    max-width:calc(100% - 250px);
    margin:0 auto;
    left:250px;
    min-height:100%;
}