.heading-31 {
    position: relative;
    padding: .3em 0 .2em 1em;
    border-bottom: 3px solid #a596b0;
    color: #333333;
}

.heading-31::before {
    position: absolute;
    top: 0;
    left: .3em;
    transform: rotate(55deg);
    height: 11px;
    width: 12px;
    background: #a596b0;
    content: '';
}

.heading-31::after {
    position: absolute;
    transform: rotate(15deg);
    top: .6em;
    left: 0;
    height: 8px;
    width: 8px;
    background: #a596b0;
    content: '';
}
mark {
  background-color: #ffff9e;
}


body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
.image-container {
    display: flex;
    justify-content: space-around; /* 子要素を均等に配置します */
    align-items: center; /* 子要素を縦方向の中心に揃えます */
    height: 100vh; /* ビューポートの高さに合わせます（任意） */
}

.image-container img {
    height: auto; /* 画像の縦横比を維持します */
}
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 10;
  background-color: #d6ffea;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeOut 1.5s 2.5s forwards;
}

@keyframes fadeOut {
  0% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    visibility: hidden;
  }
}

.loading__logo {
  opacity: 0;
  animation: logo_fade 2s 0.5s forwards;
  width: 175px;
}

@keyframes logo_fade {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }

  60% {
    opacity: 1;
    transform: translateY(0);
  }

  100% {
    opacity: 0;
  }
}
.button-32 {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 250px;
  margin:0 auto;
  padding: .9em 2em;
  overflow: hidden;
  border: 1px solid #1b435f;
  border-radius: 25px;
  background-color: #fff;
  color: #1b435f;
  font-size: 1em;
}

.button-32:hover {
  background-color: transparent;
  color: #fff;
}

.button-32::before {
  position: absolute;
  z-index: -1;
  transform: rotate(-30deg);
  width: 100%;
  height: 0;
  border-radius: 25px;
  background-color: #002a47;
  content: '';
  transition: height .3s ease;
}

.button-32:hover::before {
  height: 350%;
}


.example{
    display: inline-block;
}
.example img{
    display: block;
}
.heading-6 {
    display: inline-block;
    position: relative;
    padding: 0 2.5em;
    color: #333333;
}

.heading-6::before,
.heading-6::after {
    content: '';
    display: inline-block;
    position: absolute;
    top: 50%;
    width: 45px;
    height: 3px;
    background-color: #a596b0;
}

.heading-6::before {
    left: 0;
}

.heading-6::after {
    right: 0;
}
 html {
    scroll-behavior: smooth;
}
.pagetop {
    height: 50px;
    width: 50px;
    position: fixed;
    right: 30px;
    bottom: 30px;
    background: #fff;
    border: solid 2px #000;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.pagetop__arrow {
    height: 10px;
    width: 10px;
    border-top: 3px solid #000;
    border-right: 3px solid #000;
    transform: translateY(20%) rotate(-45deg);
}
	 </style>
	 <style>
		 @media (hover: hover) and (pointer: fine) {
    .pagetop:hover, .pagetop:hover .pagetop__arrow {
        border-color: #deb48c;
    }
}
nav{
   background:#f5ecf4 ;
    color:#fff;
    text-align: center;
}
nav ul{
    list-style: none;
    display: flex;
    justify-content: center;
} 
nav ul ul{
    display: block;
}
nav ul li{
    position: relative;
}
nav ul li a{
    display: block;
    text-decoration: none;
    color: #999 ;
    padding:20px 35px;
    transition:all .3s;
}
nav ul li li a:hover{
    color:#fff;
}
nav ul li a{
    padding:10px 35px;
}
nav ul li.has-child::before{
    content:'';
    position: absolute;
    left:15px;
    top:25px;
    width:6px;
    height:6px;
    border-top: 2px solid #999;
    border-right:2px solid #999;
    transform: rotate (135deg);
}
nav li.has-child ul{
    position: absolute;
    left:0px;
    top:62px;
    z-index: 4;
    background:lightcyan ;
    width:180px;
    visiblity: hidden;
    opacity: 0;
    transition:all .3s;
}
nav li.has-child:hover > ul,
nav li.has-child ul li:hover > ul,
nav li.has-child:active > ul,
nav li.has-child ul li:active > ul{
    visibility: visible;
    opacity: 1;
}

nav li.has-child ul li a{
    color: black;
    border-bottom:solid 1px
    rgba(255,255,255,0.6);
    }
nav li.has-child ul li a:hover,
nav li.has-child ul li a:active{
    background:3577CA;
}

html {
  font-family: sans-serif;
}

body {
  background: #d1ffd1;
}

ul {
  padding: 0;
  list-style: none;
}

a {
  color:#000000;
  text-decoration: none;
}

a:hover {
  color: #000;
}

hr {
  height: 1px;
  border: 0;
  border-top: 1px solid #e5e7eb;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.footer {
  padding: 2rem;
  font-size: 15px;
  color: #4b5564;
  background: #d6ffea;
}

.footer__navi-heading {
  font-weight: 600;
}

.footer__logo {
  display: inline-block;
  margin-bottom: 2rem;
}

.footer__navi li {
  margin-bottom: 0.75rem;
}

@media (min-width: 768px) {
  .md-flex {
    display: flex;
  }

  .md-justify-between {
    justify-content: space-between;
  }

  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}