/* 先頭に.header必須 */
div#header {
  margin-top: 0;
  padding: 0;
  background: linear-gradient(to bottom, #a9e1f7 0%, #dff3fb 50%, #ffffff 100%);
  display: flex;
}

.header h1{
  width: 50%;
  margin-top: 0;
  padding: 5px 0 0 5px;
  font-family:serif;
  font-weight: bold;
  font-size: 20px;
  color: #3c5389;
}
.header div{
  width: 50%;
  display: block;
  text-align: right;
  justify-content: flex-end;
}
.header p{
  padding: 5px 5px 0 0;
  margin: 0;
  margin-right: 10px;
  font-size: 20px;
}
.header img{
  width: 45px;
  height: 45px;
}