.center {
  text-align: center;
  }

/*背景*/
   .sample {
   height: 400px;
   background-image:url("../img/istockphoto-1202525436-612x612_bokashi.jpg");
   background-repeat: no-repeat;
   background-position: center;
   }


/*画面幅に合わせて画像表示*/
  img {
  width: 100%; /*幅*/
  height: auto; /*高さ*/
  }


/*画像を丸く表示*/
   .image-container {
     display: flex;
     justify-content: center;
     align-items: center;
     height: 300px; /* 適宜高さを調整 */
   }

   .rounded-image {
     width: 100px; /* 適宜幅を調整 */
     height: 100px; /* 適宜高さを調整 */
     border-radius: 50%;
     object-fit: cover;
   }

/*loading　animation*/
        body {background: #ffffff;}
        @keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-moz-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-webkit-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-o-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-moz-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-webkit-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @-o-keyframes rotate-loading {
            0%  {transform: rotate(0deg);-ms-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); -moz-transform: rotate(0deg);}
            100% {transform: rotate(360deg);-ms-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); -moz-transform: rotate(360deg);}
        }

        @keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }

        @-moz-keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }

        @-webkit-keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }

        @-o-keyframes loading-text-opacity {
            0%  {opacity: 0}
            20% {opacity: 0}
            50% {opacity: 1}
            100%{opacity: 0}
        }
        .loading-container,
        .loading {
            height: 100px;
            position: relative;
            width: 100px;
            border-radius: 100%;
        }


        .loading-container { margin: 40px auto }

        .loading {
            border: 2px solid transparent;
            border-color: transparent #333 transparent #333;
            -moz-animation: rotate-loading 1.5s linear 0s infinite normal;
            -moz-transform-origin: 50% 50%;
            -o-animation: rotate-loading 1.5s linear 0s infinite normal;
            -o-transform-origin: 50% 50%;
            -webkit-animation: rotate-loading 1.5s linear 0s infinite normal;
            -webkit-transform-origin: 50% 50%;
            animation: rotate-loading 1.5s linear 0s infinite normal;
            transform-origin: 50% 50%;
        }

        #loading-text {
            -moz-animation: loading-text-opacity 2s linear 0s infinite normal;
            -o-animation: loading-text-opacity 2s linear 0s infinite normal;
            -webkit-animation: loading-text-opacity 2s linear 0s infinite normal;
            animation: loading-text-opacity 2s linear 0s infinite normal;
            color: #333333;
            font-family: "Helvetica Neue, "Helvetica", ""arial";
            font-size: 10px;
            font-weight: bold;
            margin-top: 45px;
            opacity: 0;
            position: absolute;
            text-align: center;
            text-transform: uppercase;
            top: 0;
            width: 100px;
        }


/*h2*/
h2 {
  color: red;
}

/* ボタン本体 */
.btn {
  display: inline-block;
  padding: 0.8em 3em;
  background-color: #4db56a; /* 背景色 */
  box-shadow: 0 5px 0 #47885e; /* 影の太さ・色 */
  border-radius: 60px;
  color: #fff;
  cursor: pointer;
  text-decoration: none; /* 文字の下線を消す */
}

/* クリック時 */
.btn:active {
  box-shadow: none;
  transform: translateY(5px);
}