body {
   font-family: sans-serif;
   max-width: 70em;
   margin-left: auto;
   margin-right: auto;
   padding-left: 1em;
   padding-right: 1em;
}

.navbar {
   background-color: #313236;
   border-radius: 2px;
   max-width: 70em;
}

#logo {
   max-height: 18em;
   max-width: 15em;
   width: auto;
   height: auto;
   margin: 1em;
   align-self: flex-end;
}

.navbar a {
   color: #aaa;
   display: inline-block;
   font-size: 15px;
   padding: 10px;
   text-decoration: none;
}

.navbar a:hover {
   color: #ffffff;
}

header{
   display: flex;
   /*border-style: solid;*/
   width: 100%;
   height: 100%;
   position: relative;
   flex-wrap: wrap;
   justify-content: space-between;
   margin: auto;
}


@media only screen and (max-width: 640px) {
   header {
      flex-direction: column;
      align-items: center;
   }

   #logo {
      align-self: auto;
   }
}