* {
  box-sizing: border-box;
  font-family: Tahoma, Verdana, sans-serif;
}
.header {
  background-color: #F1F1F1;
  text-align: left;
  padding: 2em;
}
.header-text {
  font-size: 1.5em;
  font-weight: bold;
  font-variant: small-caps;
  float: right;
}
.header-picture {
  height: 15%;
  width: auto;
  min-width:3.5em;
}
.footer {
  background-color: #F1F1F1;
  text-align: center;
  padding: 1em;
  font-size: .8em;
}
.content {
  background-color: #FFFFFF;
  display: flex;
  text-align: center;
  justify-content: center;
  align-items: center;
  padding: 5em;
}
.picture {
  height: 25%;
  width: auto;
}
.flex-container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  padding: 20px;
}
@media (max-width: 800px){
    .flex-container {
      flex-direction: column;
    }
}
.flex-item {
    flex: 25%;
    padding: 5px;
}
img {max-width: 100%;}