/* Main ................ */
main {
}
/* aside */
aside {
float: left;
max-width: 220px;
}
.inside {
background-color: #f4f4f4;
padding: 10px;
}
#sidebar.sticky {
float: none;
position: fixed;
top: 20px;
z-index: 6;
left: auto;
}
/* main content */
.main_content {
float: right;
max-width: 700px;
}



.origin-block {
  position: relative;
}

.sidebar {
  position: relative;
}

.sticky {
  position: fixed !important;
  top: 20px;
  width: inherit;
}