.bubble {
  /*layout*/
  position: relative;
  max-width: 30em;
  /*looks*/
  background-color: #fff;
  padding: .75em .875em;
  font-size: 1.25em;
  box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, .3), 0 0.0625rem 0.125rem rgba(0, 0, 0, .2);
}

  .bubble::before {
    /*layout*/
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    bottom: 100%;
    right: 1em; /*offset should move with padding of parent*/
    border: .5rem solid transparent;
    border-top: none;
    /*looks*/
    border-bottom-color: #fff;
    filter: drop-shadow(0 -0.0625rem 0.0625rem rgba(0, 0, 0, .1));
  }

.signin-emphasis {
  font-weight: 400;
  border-bottom: 2px dotted gray;
}

.bubble-container {
  font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  line-height: 1.5;
  font-weight: 300;
  color: #192229;
  height: 100%;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-grow: 1;
}

/* 目立つ説明欄 */
.bs-callout {
  padding: 20px;
  margin: 20px 0;
  border: 1px solid #eee;
  border-left-width: 5px;
  border-radius: 3px;
}

.bs-callout h4 {
  margin-top: 0;
  margin-bottom: 5px;
}

.bs-callout p:last-child {
  margin-bottom: 0;
}

.bs-callout code {
  border-radius: 3px;
}

.bs-callout + .bs-callout {
  margin-top: -5px;
}

.bs-callout-default {
  border-left-color: #777;
}

.bs-callout-default h4 {
  color: #777;
}

.bs-callout-primary {
  border-left-color: #428bca;
}

.bs-callout-primary h4 {
  color: #428bca;
}

.bs-callout-success {
  border-left-color: #5cb85c;
}

.bs-callout-success h4 {
  color: #5cb85c;
}

.bs-callout-danger {
  border-left-color: #d9534f;
}

.bs-callout-danger h4 {
  color: #d9534f;
}

.bs-callout-warning {
  border-left-color: #f0ad4e;
}

.bs-callout-warning h4 {
  color: #f0ad4e;
}

.bs-callout-info {
  border-left-color: #5bc0de;
}

.bs-callout-info h4 {
  color: #5bc0de;
}

.btn-width-70 {
    width: 70px;
}

.mymodal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    justify-content: center; /* Horizontally center */
    align-items: center; /* Vertically center */
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
}

.mymodal-content {
    background-color: #fff;
    padding: 10px;
    border: 1px solid #888;
    width: 26rem; 
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.mymodal-header {
    margin-bottom: 0.5rem;
    border-bottom: 1px solid #dee2e6 !important;
}

.myclose {
    color: #aaa;
    float: right;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
}

.myclose:hover, .myclose:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.training-image-container {
    display: inline-block;
}

.responsive-img {
    width: 550px;
    height: auto;
    display: block;
}