#header{
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid gray;
  padding: 0 10px;
  box-sizing: border-box;
  flex: 0 0;
}
#header h2{
  font-size: 1.2rem;
  padding-left: 10%;
}
.header-button-container{
  display: flex;
}
.header-button-container>a{
  margin-right: 5px;
}
.game-time {
  width: 100px;
  text-align: right;
}