body {
  font-size: 14px;
  margin: 0;
}

.top,
.left,
.center,
.right {
  background-color: lightblue;
  text-align: center;
}

.top {
  width: 100%;
  height: 100px;
  margin-bottom: 10px;
}

.container {
  display: flex;
}

.left {
  height: max-content;
  margin-left: 5px;
}

.center {
  width: calc(100% - 30px);
  max-height: calc(100vh - 110px);
  margin-left: 10px;
  margin-right: 10px;
  overflow-y: scroll;
}

.right {
  width: 300px;
  height: 300px;
  margin-right: 5px;
  overflow-y: scroll;
}