.bg_pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #ffffff;
  opacity: 0.4;
  z-index: -1;
}

.Circles {
  background-image: radial-gradient(circle at center center, #ff0000, #867f7f), repeating-radial-gradient(circle at center center, #0018f8, #000000, 20px, #1f1a5500 40px, #de1313 20px);
  background-blend-mode: multiply;
}

html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

body {
  font-family: YuGothic, "游ゴシック体", "Yu Gothic", "ヒラギノ角ゴ Pro", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
  letter-spacing: .025em;
  line-height: 1.8;
}

.text {
  display: block;
  max-width: 1024px;
  margin: 0 auto;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
  margin-top: 150px;
  background-color: #ffffff;
  box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px, rgba(10, 37, 64, 0.35) 0px -2px 6px 0px inset;
  padding: 10% 20px;
  border-radius: 5px;
}

* {
  box-sizing: border-box;
}

.section {
  max-width: 1024x;
  margin: 0 auto;
  padding: 3px;
  border-radius: 5px;
  /* padding: 100px 20px 1000px; */
}

._a {
  max-width: 300px;
  margin: 0 auto;
}

._a a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 2.0em 1.0em;
  /* border: 1px solid #222222; */
  background: linear-gradient(to right, #ffffff 50%, #222222 50%);
  background-size: 200% auto;
  color: #222222;
  font-size: 12px;
  text-decoration: none;
  text-align: center;
  transition: .3s;
  position: relative;
  box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px, rgba(10, 37, 64, 0.35) 0px -2px 6px 0px inset;
  border-radius: 3px;

}

/* ._a a:after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -5px;
  width: 100%;
  height: 100%;
  border-right: 1px solid #222222;
  border-bottom: 1px solid #222222;
} */

._a a:hover {
  color: #ffffff;
  background-position: -100% 0;
}