#title{
    font-size: 80px;
    color: #fff;
    background: #1e71dd;
}
#midtitle{
    font-size: 20px;
}
#target{
    position: relative;
    font-size: 70px; 
}
.str{
    text-align: center;
}
.parents{
    text-align: center;
}



/*まずはお決まりのボックスサイズ算出をborer-boxに */
*,
*:before,
*:after {
  -webkit-box-sizing: inherit;
  box-sizing: inherit;
}

html {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-size: 62.5%;/*rem算出をしやすくするために*/
}

.btn,
a.btn,
button.btn {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.5;
  position: relative;
  display: inline-block;
  padding: 1rem 4rem;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  text-align: center;
  vertical-align: middle;
  text-decoration: none;
  letter-spacing: 0.1em;
  color: #212529;
  border-radius: 0.5rem;
}

a.btn--orange {
    color: #fff;
    background-color: #eb6100;
    border-bottom: 5px solid #b84c00;
}

a.btn--orange:hover {
    margin-top: 3px;
    color: #fff;
    background: #f56500;
    border-bottom: 2px solid #b84c00;
}

a.btn--shadow {
    -webkit-box-shadow: 0 3px 5px rgba(0, 0, 0, .3);
    box-shadow: 0 3px 5px rgba(0, 0, 0, .3);
}