body {
   margin-left: auto; /* To center a table, set left and right margin to auto: */
   margin-right: auto;
   background: white; 
   margin: 0;
   zoom: 100%
   font-family: Verdana, "DejaVu Sans", "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", sans-serif;
}

.top-container {
  /* background-color: #f1f1f1; */
   margin-left: auto; /* To center a table, set left and right margin to auto: */
   margin-right: auto;
   padding: 1px; 
   text-align: center;
   width: 100%;
}

.header {
   margin-left: auto; /* To center a table, set left and right margin to auto: */
   margin-right: auto;
   padding: 1px 1px; 
   background: #F0FFFF;
   width: 100%;
   /* color: #f1f1f1; */
}

.content {
   margin-left: auto; /* To center a table, set left and right margin to auto: */
   margin-right: auto;
   padding: 1px; 
   width: 100%;
}

.sticky {
   margin-left: auto; /* To center a table, set left and right margin to auto: */
   margin-right: auto;
   position: fixed;
   top: 0;
   width: 100%;
}

.sticky + .content {
   padding-top: 102px