.pad16{
    padding: 16px;
}

.box1 {
    padding: 0.5em 1em;
    margin: 16px;
    border: double 5px #ffd4d4;
}
.box1 p {
    text-align: center;
    margin: 0; 
    padding: 0;
}

.btn-circle-flat {
  display: inline-block;
  text-decoration: none;
  background: #fdffd1;
  color: black;
  width: 120px;
  height: 120px;
  line-height: 120px;
  border-radius: 50%;
  text-align: center;
  overflow: hidden;
  transition: .4s;
}

.btn-circle-flat:hover {
  background: #f7a677;
}

.btn-wrap {
  display: flex;
  justify-content: center; /* 横中央 */
  align-items: center;     /* 縦中央 */
}

.notice{
    background-color: #feffe7;
    padding: 16px;
}

.notice p{
background-color: #ffd4d4;
font-size: 20px;
text-align: center;
padding: 10px;
border-radius: 15px;
margin: 5px 20px;
}