.hero {
  color: #fff;
  height: 95vh;
  background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
  background-size: 400% 400%;
  animation: Gradient 15s ease infinite;
}

body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

img {
  max-width: 100%;
  height:auto;
}

@keyframes Gradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.title {
  margin-top:25vh;
  font-family: sans-serif;
  font-weight: 300;
  text-align: center;
  right: 0;
  left: 0;
  color: #fff;
}

.card.large {
  height: auto;
}

.material-icons {
  position: relative;
  /* 値は調整してください */
  top: 5px;
  left: 0;
}
i {
  position:static!important;
}

.card-action {
  position: relative!important;
}

@media screen and (min-width: 320px) {
  .title h1 {
    font-size: 1.9rem;
  }
}

@media screen and (min-width: 900px) {
  .title h1 {
    font-size: 4rem;
  }
}

.sidenav-overlay {
  opacity:0!important;
}

nav ul a,
nav i,
nav .brand-logo {
  color: #444;
}

p {
  line-height: 2rem;
}

nav img {
  margin-top: 0.5rem;
  height: 3rem;
  width: auto;
}


/* アイコンサイズ */
.material-icons.md-18 { font-size: 18px; }
.material-icons.md-24 { font-size: 24px; }
.material-icons.md-36 { font-size: 36px; }
.material-icons.md-48 { font-size: 48px; }
 
/* 背景が明るいとき用のアイコン色 */
.material-icons.md-dark { color: rgba(0, 0, 0, 0.54); }
.material-icons.md-dark.md-inactive { color: rgba(0, 0, 0, 0.26); }
 
/* 背景が暗いとき用のアイコン色 */
.material-icons.md-light { color: rgba(255, 255, 255, 1); }
.material-icons.md-light.md-inactive { color: rgba(255, 255, 255, 0.3); }

#loading {
  width: 100vw;
  height: 100vh;
  transition: all 1s;
  background-color: #0bd;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 998;
}
.loader,
.loader:before,
.loader:after {
  background: #ffffff;
  -webkit-animation: load1 1s infinite ease-in-out;
  animation: load1 1s infinite ease-in-out;
  width: 1em;
  height: 4em;
}
.loader {
  color: #ffffff;
  text-indent: -9999em;
  margin: 49.3vh 49.3vw;
  position: relative;
  font-size: 11px;
  -webkit-transform: translateZ(0);
  -ms-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-animation-delay: -0.16s;
  animation-delay: -0.16s;
}
.loader:before,
.loader:after {
  position: absolute;
  top: 0;
  content: '';
}
.loader:before {
  left: -1.5em;
  -webkit-animation-delay: -0.32s;
  animation-delay: -0.32s;
}
.loader:after {
  left: 1.5em;
}
@-webkit-keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow: 0 0;
    height: 4em;
  }
  40% {
    box-shadow: 0 -2em;
    height: 5em;
  }
}
@keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow: 0 0;
    height: 4em;
  }
  40% {
    box-shadow: 0 -2em;
    height: 5em;
  }
}
.loaded {
  opacity: 0;
  visibility: hidden;
}