Remove superfluous body tag from terminal less

IPython/html/static/terminal/less/terminal.less

@@ -1,36 +1,36 b''
-body.terminal-app {
+.terminal-app {
   background: @page-backdrop-color;
 
   #header {
     background: @body-bg;
     .box-shadow(@global-shadow);
 
     .header-bar {
       margin-bottom: -1px;
     }
   }
 
   .terminal {
     float: left;
     font-family: monospace;
     color: white;
     background: black;
     padding: @code_padding;
     border-radius: @border-radius-base;
     .box-shadow(@global-shadow-dark);
 
     &, dummy-screen {
       line-height: 1em;
       font-size: @notebook_font_size;
     }
   }
 
   .terminal-cursor {
     color: black;
     background: white;
   }
 
   #terminado-container {
     margin-top: @page-header-padding;
   }
 }