html[theme='dark-mode'] img{
    filter: invert(1) hue-rotate(180deg);
}
/* バックグランド */
/* body {
background-color: #F62459;
background-image: linear-gradient(rgba(25, 181, 254, 0.6),rgba(246, 36, 89, 0.6)),linear-gradient(rgba(0, 0, 0, 0.6),rgba(0, 0, 0, 0.6)),url('https://images.unsplash.com/photo-1440439307159-c3afc8a8e4ff?dpr=1&auto=format&crop=entropy&fit=crop&w=2000&h=1000&q=40');
} */

/* Twitterコレクション */
.twWrapperH, .twWrapperM {display: none;} 
@media screen and (min-height: 510px){.twWrapperL,  .twWrapperH {display: none; } .twWrapperM {display: block; } } 
@media screen and (min-height: 630px){.twWrapperL, .twWrapperM {display: none; } .twWrapperH {display: block; } } 
/* Twitterコレクション */


.scroll-top {
position: fixed;
right: 20px;
bottom: 20px;
z-index: 100;
background-color: #999;
opacity: .8;
width: 50px;
height: 50px;
border-radius: 50%;
border: none;
color: #fff;
}
.scroll-top:hover {
cursor: pointer;
}

/* フッタ固定 */
body,
#wrapper {
display: flex;
flex-direction: column;
min-height: 100vh;
}
footer {
margin-top: auto;
}

/* ログイン画面 */
.card-signin {
  border: 0;
  border-radius: 1rem;
  box-shadow: 0 0.5rem 1rem 0 rgba(0, 0, 0, 0.1);
}
.card-signin .card-title {
  margin-bottom: 2rem;
  font-weight: 300;
  font-size: 1.5rem;
}
.card-signin .card-body {
  padding: 2rem;
}
.form-signin {
  width: 100%;
}
.form-signin .btn {
  font-size: 80%;
  border-radius: 5rem;
  letter-spacing: .1rem;
  font-weight: bold;
  padding: 1rem;
  transition: all 0.2s;
}
.btn-google {
  color: white;
  background-color: #ea4335;
}
.btn-facebook {
  color: white;
  background-color: #3b5998;
}