* {
  bottom: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", "Meiryo",
    "メイリオ", sans-serif;
}

a {
  text-decoration: none;
}

main {
  .wrapper {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 1px 1px 10px #ddd;

    .bg {
      width: 100%;
      max-width: 900px;
      margin: 0 auto;
      height: 100vh;
      position: fixed;
      top: -50px;
      left: 50%;
      translate: -50%;
      z-index: -1;
      overflow: hidden;
      img {
        width: 150%;
      }
    }
  }

  .contents {
    width: 100%;
    height: auto;
    text-align: center;
    img {
      width: 100%;
      vertical-align: top;
    }
  }
}

footer {
  padding: 20px 0;
  background-color: #111;
  small {
    display: block;
    text-align: center;
    color: #fff;
  }
}

.cv-btn {
  position: fixed;
  bottom: 20px;
  left: 50%;
  translate: -50%;
  z-index: 999;
}

.btn_box {
}

#btn_animation .btn {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 360px;
  height: 78px;
  border-radius: 1000px;
  line-height: 78px;
  font-size: 20px;
  font-weight: 600;
  text-decoration: none;
  background-image: linear-gradient(
    150deg,
    rgba(253, 142, 146, 1) 40%,
    rgba(254, 171, 114, 1) 68%
  );
  color: #fff;
  text-align: center;
  overflow: hidden;
  animation: btn_animation 1s infinite;
  box-shadow: 0 3px 0 rgb(0, 0, 0, 0.3);
}

@keyframes btn_animation {
  0% {
    box-shadow: 0 3px 0 rgb(0, 0, 0, 0.3);
    top: 0px;
  }
  10% {
    box-shadow: 0 0 0 rgb(0, 0, 0, 0.3);
    top: 3px;
  }
  20% {
    box-shadow: 0 3px 0 rgb(0, 0, 0, 0.3);
    top: 0px;
  }
  30% {
    box-shadow: 0 0 0 rgb(0, 0, 0, 0.3);
    top: 3px;
  }
  40% {
    box-shadow: 0 3px 0 rgb(0, 0, 0, 0.3);
    top: 0px;
  }
}