@charset "UTF-8";

body {
  background: #4d5059;
  min-height: 100vh;
}

.navbar {
  background: white;
}

.navbar-static-top {
  box-shadow: 0 3px 3px rgba(0, 0, 0, 0.7);
  opacity: 0.9;
}

.bg_element {
  background-size: 512px 512px;
  bottom: 0;
  filter: blur(2px);
  height: 400px;
  position: absolute;
  right: 0;
  width: 400px;
}

.navbar img {
  height: auto;
  max-width: 80vw;
}

.title {
  font-size: 1.2em;
  margin-bottom: 24px;
}

.dialog_container {
  margin-top: 24px;
  width: 100vw;
}

.login_dialog {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #eee;
  border-radius: 4px;
  box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.7);
  opacity: 0.9;
  padding: 24px 16px;
}

@media screen and (max-width: 400px) {

  /* 400px以下 */

  .bg_element {
    background-size: cover;
    height: 50vh;
    width: 100vh;
  }
}

@media screen and (min-width: 640px) {

  /* 640px以上 */

  .dialog_container {
    margin-top: 64px;
    max-width: 640px;
  }

  .title {
    margin-bottom: 40px;
  }

  .login_button {
    margin-top: 40px;
  }
}