.table-wrapper {
    position: relative;
    max-height: 400px; /* ここで表示する行数を調整します */
    overflow-y: auto;
    
    display: block;
}

.table {
    width: 100%;
    margin-bottom: 0; /* bootstrapがmarginを自動的に設定するのでこれをリセット */
}

.marker_yellow {
    background: linear-gradient(transparent 80%, #fff100 60%);
}

.iframe-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
  }
  
.iframe-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

@media (max-width: 575.98px) {
    .mx-auto-sm {
        margin-left: auto !important;
        margin-right: auto !important;
    }
    .mx-half {
        width: 600px;
    }
}

@media (min-width: 900px) {
    .container {
      max-width: 900px;
    }
}