h1 {
  text-align: center;

}

.leftright {
display: flex;
flex-direction: row;
flex-wrap: wrap;
}

.side {
  display: flex;
  flex-direction: row;
}
.buffer {
  flex-grow: 1;
  border: solid blue 1px;
}
.triangle {
  flex-grow: 0;
  border: solid red 1px;

}
.mydate {
  width: 14.285%;
  height: 20px;
  border: solid red 1px;
  padding-left: 10px;
  box-sizing: border-box;
}