custom css in WP admin

/* =Header image top margin
-------------------------------------------------------------- */
#branding hgroup {
    display: none;
}
#branding img {
    border-radius: 7px 7px 0 0;
}   border-top: none;


/* Start Header Logo */
#header-logo {
float: left;
width: 100%;
height: 150px;
overflow: hidden;
color: transparent;
}
/* End Header Logo */

.site-header h1 a, .site-header h2 a,
.site-header h1, .site-header h2 {
	display: none;
}

/* Social media icons in header */
#header_icons{
   float: left;
   margin-top: 0px;
   width:400px;
}

#header_icons li{
   float: left;
   margin: 5px 0px;
   display:inline;
}

#header_icons ul li {
  display: inline;
}
/* Social media icons in header END*/

.site-header {
    background-color: #ffffff;
}

  .main-navigation ul.nav-menu,
  .main-navigation div.nav-menu > ul {
    border-bottom: 1px solid #969696;
    border-top: 1px solid #969696;
}

/* Headings -----*/

h1 { /* This style used as title on single posts and pages */
  clear: both;
  font-size: 20px;
  color: #447994;
  font-family: "Century Gothic", Helvetica, Arial, Sans-Serif;
  margin: 0px 0px 10px 0px;
  padding: 5px 0px;
  font-weight: normal;
  text-transform: capitalize;
  text-align: right;
  letter-spacing: -2px;
  border-top: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;

  /* Site Content width -----*/
    .site-content {
    float: left;
    width: 73%;

/* Sidebar -----*/
.widget-area .widget a {
  color: 1c6ba0;
}
.widget-area .widget a:hover {
  color: #21759b;
}

/* Left Sidebar Layout -----*/
@media screen and (min-width: 600px) {
    .left-sidebar.custom-layout .site-content {
        float: right;
    }
    .left-sidebar.custom-layout .widget-area {
    float: left;
    clear: left;
    background-color: #F0F9FF;
    }
  .left-sidebar.custom-layout #extra-sidebar {
    float: left;
    width: 26.0417%;
    margin: 1.71429rem 0 0;
    background-color: #F0F9FF;
  }
}

/* Footer */
footer[role="contentinfo"] {
  border-top: 1px solid #7ecafa;
  padding: 24px 0;
  padding: 1.714285714rem 0;
  background-color: #F0F9FF;
  border-bottom: 15px solid #7ecafa;
}

/* Footer  menu links*/
ul#menu-footer-menu li {
   display: inline;
   padding: 0 10px;
}