html, body {
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  background-color: #F9F4B7;
}

td {
  border: 1px solid red;
  border-collapse: collapse;
  border-style: dotted;
}

.guess {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  cursor: pointer; 
}

.guess:hover {
  font-weight: bold;  
}

.btn {
  font-family: 'Courier New',monospace;
  background-color: #666699;
  border: none;
  color: #F9F4B7;
  padding: 5px 12px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  border-radius: 15px;
  outline:none;
  margin-left: 3px;
  margin-bottom: 2px;
  margin-top: 2px;
}

.btn:hover {
  background-color: #992C15;
}

.myq1 {
  text-align: center;
}

.myh1 {
  color: red;
  font-weight: bold;
  margin-bottom: 5px;
  line-height: 0;
}

.myh2 {
  color: blue;
  font-weight: bold;
  margin-bottom: 5px;
  line-height: 0;
}

.out {
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  border: 1px solid #ccc;
  padding: 10px;
  box-sizing: border-box;
  background-color: #F9F4B7;
}

.myb2 {
  font-family: 'Courier New',monospace;
  background-color: #666699;
  border: none;
  color: #F9F4B7;
  padding: 1px 5px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 12px;
  border-radius: 10px;
  outline:none;
  margin-left: 2px;
  margin-bottom: 1px;
  margin-top: 1px;
}

.myb2:hover {
  background-color: #992C15;
}

.myf1 {
  font-family: 'Courier New',monospace;
}

.myf2 {
  font-family: 'Courier New',monospace;
  background-color: #ffcccc;
}