*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: sans-serif;
}

body{
  background:linear-gradient(160deg,#a78bfa,#f0abfc,#fde2ff);
  color: white;
  overflow-x: hidden;
  width: 100vw;
  height: 100%;
  min-height: 100vh;
}

.container{
  margin: auto;
  padding: 20px;
}

.main-container{
  text-align: center;
  margin: auto;
  padding: 120px 20px 60px;
}

.icon{
  aspect-ratio: 1/1;
  border-radius: 50%;
  box-shadow: 0 0 30px rgba(255,255,255,0.6);
  margin: 20px;
}

.grid{
  display: grid;
}

.box{
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.card{
  background:rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
}

footer{
  margin-top: 80px;
  padding: 30px;
  background: rgb(255,255,255,0.12);
  backdrop-filter: blur(10px);
  color: white;
  text-align: center;
  font-size: 14px;
  opacity: 0.9;
}



/* 星のスタイル */
.star{
  position: absolute;
  display: block;
  background-color: #fff; /* 星の色 */
  border-radius: 50%;
  box-shadow: 0 0 4px 2px rgba(255,255,255, 0.2); /* 星の影 */
  opacity: 0;
  animation: twinkle 5s infinite;
}
@keyframes twinkle{
  0%{
    opacity: 0;
  }

  50%{
    transform: scale(1.1);
    opacity: 1;
  }

  100%{
    opacity: 0;
    transform: scale(1);
  }
}

.flex{
  display: flex;
}