html,
body {
    margin: 0;
    padding: 0;
}
.ui-sortable-handle {
    -ms-touch-action: none;
    touch-action: none;
}
.center-content {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top:0;
    right: 0;
    left: 0;
    bottom: 0;
}
.board-wrapper {
    position: relative;
    box-shadow: 0 1px 10px 0 rgba(0, 0, 0, 0.1);
    background: #f6f7fa;
    border-radius: 5px;
}
.board-inner {
    overflow: hidden;
    display: flex;
    position: relative;
    width: 750px;
    height: 550px;
}
.board-columns{
    flex: 0 0 250px;
    max-width: 250px;
    padding: 20px;
    box-sizing: border-box;
}
.board-columns.middle {
    border:solid #e1e1e1;
    border-width: 0 1px;
}
.board-columns-head {
    font-family: 'Open Sans', sans-serif;
    font-size: 20px;
    line-height: 20px;
    padding-bottom: 6px;
}
.board-card {
    margin-top: 5px;
    padding: 7px;
    box-sizing: border-box;
    background: #fff;
    border-radius: 3px;
    width: 208px;
    height: 115px;
    border: solid #c3c7d9;
    border-width: 1px 1px 1px 4px;
    position: relative;
}
.board-card:hover {
    cursor: pointer;
    box-shadow: 0 0 5px 0 rgba(144, 148, 169, 0.4);
}
.board-card.sortable-dragging {
    transform: rotate(5deg);
}

.placeholder {
    margin-top: 5px;
    padding: 7px;
    box-sizing: border-box;
    border-radius: 3px;
    width: 208px;
    height: 115px;
    border: solid #e1e3ec;
    border-width: 1px 1px 1px 4px;
    background: #e1e3ec;
    position: relative;
}
.board-card-title {
    font-family: 'Open Sans', sans-serif;
    font-size: 15px;
}
.board-columns-container {
    min-height: 475px;
}
.board-assigns {
    height: 20px;
    position: absolute;
    bottom: 10px;
    display: flex;
}
.user {
    height: 20px;
    width: 20px;
    border-radius: 2px;
    background: #c3c7d9 url("../../images/avatars.png") center center no-repeat;
    margin-right: 5px;
}
.user1 {
    background-color: #fbd04c;
    background-position: 0 0;
}
.user2 {
    background-color: #06c4b7;
    background-position: -20px 0;
}
.user3 {
    background-color: #a768e7;
    background-position: -40px 0;
}
.user4 {
    background-color: #00559b;
    background-position: -60px 0;
}
.user5 {
    background-color: #21aaf8;
    background-position: -80px 0;
}
.user6 {
    background-color: #fbd04c;
    background-position: -100px 0;
}
.user7 {
    background-color: #f43034;
    background-position: -120px 0;
}
.user8 {
    background-color: #fbd04c;
    background-position: -140px 0;
}
.user9 {
    background-color: #06c4b7;
    background-position: -160px 0;
}
.user10 {
    background-color: #fbd04c;
    background-position: -180px 0;
}
.informer {
    position: absolute;
    color: #fff;
    background: #193885;
    font-size: 16px;
    font-family: "Open Sans", Arial, sans-serif;
    line-height: 40px;
    padding: 0 27px;
    border-radius: 3px;
    top: 15px;
    left: 0;
    animation: bounce-informer 2s infinite;
}
.informer:after {
    content: "";
    position: absolute;
    width: 12px;
    height: 12px;
    background: #193885;
    transform: rotate(45deg);
    bottom: -7px;
    left: 12px;
}
@keyframes bounce-informer {
    0%, 20%, 50%, 80%, 100% {
      transform: translateY(0);
    }
    40% {
      transform: translateY(-10px);
    }
    60% {
      transform: translateY(-15px);
    }
  }