html {
  max-height: 100vh;
}
.kanban {
  overflow: auto;
  max-height: 100vh;
}

.kanban span {
    font-size: 3rem;
  }
  
  .kanban p {
    font-family: "Roboto Slab", serif;
  }
  
  .kanban a,
  .kanban a:link,
  .kanban a:active,
  .kanban a:visited {
    color: #0066aa;
    text-decoration: none;
    border-bottom: #000013 0.16rem solid;
  }
  
  .kanban a:hover {
    color: #000013;
    border-bottom: #0066aa 0.16rem solid;
  }
  
  .kanban header,
  .kanban footer {
    max-width: 60rem;
    margin: 2rem auto;
    text-align: center;
  }
  
  .kanban .add-task-container {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    width: 22rem;
    height: 6rem;
    margin: auto;
    background: #EEEBF3;
    border: #553A89 0.2rem solid;
    border-radius: 1rem;
    padding: 0.4rem;
  }
  
  .kanban .main-container {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
  }
  
  .kanban .columns {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
    margin: 1.6rem auto;
    max-width: 100%;
  }
  
  .kanban .column {
    width: 12.6rem;
    margin: 0 0.6rem;
    padding-bottom: 0.3rem;
    background: #EEEBF3;
    border: #553A89 0.2rem solid;
    border-radius: 1rem;
  }
  
  .kanban .column-header {
    padding: 0.1rem;
    border-bottom: #553A89 0.2rem solid;
    height: 4.5rem;
    background-color: #553A89;
    color: #fff;
    border-top-left-radius: 0.8rem;
    border-top-right-radius: 0.8rem;
  }
  
  .kanban .column-header h4 {
    text-align: center;
  }
  
  /* .kanban .to-do-column .column-header {
    background: #ff872f;
  }
  
  .kanban .doing-column .column-header {
    background: #13a4d9;
  }
  
  .kanban .done-column .column-header {
    background: #15d072;
  } */
  
  .kanban .trash-column .column-header {
    background: #ff4444;
  }
  
  .kanban .task-list {
    min-height: 4rem;
  }

  .kanban .task-list-ex-over {
    min-height: 4rem;
  }
  
  .kanban ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
  }
  
  .kanban li {
    list-style-type: none;
  }
  
  .kanban .column-button {
    text-align: center;
    padding: 0.1rem;
  }
  
  .kanban .button {
    font-family: "Arimo", sans-serif;
    font-weight: 700;
    border: #000013 0.14rem solid;
    border-radius: 1rem;
    color: white;
    padding: 0.6rem 1rem;
    margin-bottom: 0.3rem;
    cursor: pointer;
  }
  
  .kanban .delete-button {
    background-color: #ff4444;
    margin: 0.1rem auto 0.6rem auto;
  }
  
  .kanban .delete-button:hover {
    background-color: #fa7070;
  }
  
  .kanban .add-button {
    background-color: #553A89;
    padding: 0 1rem;
    height: 3.5rem;
    width: 10rem;
    margin-top: 0.6rem;
  }
  
  .kanban .add-button:hover {
    background-color: #ffdd6e;
  }
  
  .kanban .task {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    vertical-align: middle;
    list-style-type: none;
    background: #fff;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
    margin: 0.4rem;
    height: 4rem;
    border: #000013 0.15rem solid;
    border-radius: 0.2rem;
    cursor: move;
    text-align: center;
    vertical-align: middle;
    border-radius: 0.5rem;
  }
  
  .kanban #taskText {
    background: #fff;
    border: #553A89 0.15rem solid;
    border-radius: 0.5rem;
    text-align: center;
    font-family: "Roboto Slab", serif;
    height: 4rem;
    width: 10rem;
    margin: auto 0.8rem auto 0.1rem;
  }
  
  .kanban .task p {
    margin: auto;
  }
  
  /* Dragula CSS Release 3.2.0 from: https://github.com/bevacqua/dragula */
  
  .kanban .gu-mirror {
    position: fixed !important;
    margin: 0 !important;
    z-index: 9999 !important;
    opacity: 0.8;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=80)";
    filter: alpha(opacity=80);
  }
  
  .kanban .gu-hide {
    display: none !important;
  }
  
  .kanban .gu-unselectable {
    -webkit-user-select: none !important;
    -moz-user-select: none !important;
    -ms-user-select: none !important;
    user-select: none !important;
  }
  
  .kanban .gu-transit {
    opacity: 0.2;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=20)";
    filter: alpha(opacity=20);
  }

  .kanban p {
    color: black;
  }