* {box-sizing: border-box;}

body { 
  margin: 0;
  font-family: times, serif;
}

.error {color:#00ff00;}
.header {
  overflow: hidden;
  background-color:#ffe6cc;
  padding: 10px 10px;
  border-radius:12px;
}

.header a {
  float: left;
  color: black;
  text-align: center;
  padding: 12px;
  text-decoration: none;
  font-size: 18px; 
  line-height: 20px;
  border-radius: 4px;
}

<!----the template had only words for the logo -->
.header a.logo {
  font-size: 25px;
  font-weight: bold;
}

.header a:hover {
  background-color: #f2f2f2;
  color: black;
}

.header a.active {
  background-color: dodgerblue;
  color: white;
}

.header-right {
  float: right;
}

.logo img{
  width: 20%;
  height: auto;  
}

<!------ CONTENT ------>

  
.container img {
  width: 45%;
  margin-right:30px;
    }
  
  .container { 
  display: flex;
  align-items: top;
  padding-bottom:1.25em;
  }
  
  img {
  border: 2px solid #804000;
  border-radius:15px;
  margin-right: 1em;
  }
  
  body {padding: 1.25em;}



@media screen and (max-width: 800px) {
  .header a {
    float: none;
    display: block;
    text-align: left;
  }
  
  .header-right {
    float: none;
  }
  
 .container {
  display: block;
  text-align: left;
  padding-bottom:1.25em;
 }
  
}<!---end at media--->