html {
  font-family: helvetica, sans-serif;
  background-color: rgb(237, 237, 240);
}

* {
  box-sizing: border-box;
}

table {
  border-collapse: collapse;
}

th, td {
  border: 1px solid black;
  padding-right: 10px;
  padding-left: 10px;
}

code {
  display: inline-block;
  background-color: #F4F4F4;
  font-family: courier, monospace;
  border: 1px solid #CCC;
  padding: 2px;
}

header {
  display: flex;
  flex-direction: row;
  gap: 12px;
}

.logo {
  width: 300px;
}

.title {
  margin: 0;
  margin-top: auto;
}

.aside {
  display: inline-block;
  background-color: #F4F4F4;
  border: 1px solid #CCC;
  padding: 2px;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.float_right {
    position: relative;
    float: right;
    width:  60%;
}

.float_left {
    position: relative;
    float: left;
    width:  60%;
}

IMG.displayed {
    display: block;
    margin-left: auto;
    margin-right: auto 
}

.flexcontainer {
  display: flex;
  align-items: center;
}

@media (max-width: 320px) {
  .flexcontainer {
    display: block;}
}

/* not a printer */
@media only screen {
  body {
    max-width: 900px;

    margin: auto;
    margin-top: 12px;
    margin-bottom: 12px;
    padding: 48px;
    background-color: white;
    box-shadow: 0 0 8px 1px #AAA;
  }
}

/* remove box-shadow when screen <= 900px */
@media only screen and (max-width: 900px) {
  body {
    box-shadow: none;
    max-width: 100%;
    margin: 0;
    padding: 24px;
  }
}

/* header on own line when screen <= 600px */
@media only screen and (max-width: 600px) {
  html {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    background-color: white;
  }

  header {
    flex-wrap: wrap;
  }
}

/* printer */
@media print {
  body {
    box-shadow: none;
  }
}