app.css

.title-content {
  font-size: 24px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sub-title-content {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.main-area {
  border-radius: 10px;
  padding: 20px;
  border: 1px solid rgba(0, 0, 0, 0.15);
}

.probelm-example-container {
  position: relative;
  padding: 24px 8px 8px 8px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 10px;
}

.probelm-example-title-content {
  position: absolute;
  top: 0;
  left: 0;
  border-right: 1px solid rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 10px 0 10px 0;
}

.probelm-example-another {
  position: absolute;
  top: 0;
  right: 0;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 0 10px 0 10px;
}

.probelm-example-copy {
  position: absolute;
  top: 0;
  right: 0;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 0 10px 0 10px;
}

.right {
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 10px;
  position: relative;
  padding: 28px 14p 14p 14px;
  min-height: 700px;
}

.solution-title-content {
  position: absolute;
  top: 0;
  left: 0;
  border-right: 1px solid rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 10px 0 10px 0;
}

.solution-content {
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.15);
}