.sidebar {
        display: flex;
        flex-direction: column;
        /*background: #157cce;*/
        border: 1px solid #eee;
        background: white;
        color: white;
    }
    .sidebar a {
        color: white;
    }

    .sidebar i {
        font-size: 14px;
        color: blue;
    }

    .sidebar .header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        background: blue;
        color: white;
        height: 40px;
        padding: 10px;
    }

    .sidebar .header h5 {
        font-size: 14px;
        font-weight: 500;
        margin: 0;
        text-transform: uppercase;
    }

    .sidebar .header i {
        color: white;
        font-size: 14px;
    }

    .sidebar ul {
        overflow-y: auto;
    }

    .sidebar ul li a {
        display: block;
        padding: 2px 10px;
        font-size: 14px;
        text-decoration: none;
    }

    .sidebar ul li a.active {
        background: #8abde6;
    }

    .sidebar ul li a:hover {
        background: #8abde6;
    }

    .sidebar ul li a:before {
        content: "#";
        margin-right: 2px;
    }

    .sidebar .profile {
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 48px;
        padding: 10px;
        background: #1a6baa;
        margin-top: auto;
    }

    .sidebar .profile div {
        display: flex;
        align-items: center;
        flex-grow: 1;
    }

    .sidebar .profile div .user-avatar {
        width: 32px;
        height: 32px;
        border: 2px solid white;
        padding: 1px;
        border-radius: 50%;
        margin-right: 5px;
    }

    .sidebar .profile div a {
        font-size: 14px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 120px;
    }

    .sidebar .profile .btn-sign-out {
        background: none;
        border: none;
    }

    .main-content {
        border-right: 1px solid #eee;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .main-content .header {
        height: 40px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px;
        border-bottom: 1px solid #eee;
    }

    .main-content .header h5 {
        margin: 0;
        font-size: 18px;
    }

    .main-content .header h5:before {
        content: "#";
    }

    .main-content .chat-body {
        overflow-y: auto;
        flex-grow: 1;
        padding: 10px;
    }

    .main-content .chat-input {
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: relative;
        background: #f2f2f2;
    }

    .main-content .chat-input input {
        width: 100%;
        border: none;
        height: 50px;
        border-radius: 0;
        border-top: 1px solid #eee;
        background: #f2f2f2;
        margin-top: auto;
        text-indent: 10px;
    }

    .main-content .chat-input input[type="file"] {
        display: none;
    }

    .main-content .chat-input .actions {
        padding: 0 10px;
    }

    .main-content .chat-input .actions i {
        color: #aaa;
        cursor: pointer;
    }

    .main-content .chat-input .actions i:hover {
        color: #555;
    }

    .main-content .chat-input .actions label {
        margin-bottom: 0;
    }

    .main-content .chat-input .actions #emojibtn {
        margin: 0 10px;
    }

    .main-content .chat-input .emoticon-container {
        width: 166px;
        background: white;
        height: 190px;
        border: 1px solid #ccc;
        position: absolute;
        right: 54px;
        bottom: 32px;
        padding: 5px 7px;
        line-height: 20px;
    }

    .main-content .chat-input .emoticon-container a {
        float: left;
        height: 24px;
        margin-left: 4px;
    }

    .chat-message {
        margin: 10px;
        /*min-width: 230px;*/
        width: 100%;
    }

    .chat-message .message-content {
        background: #f5f5f5;
        padding: 3px 8px;
        border: 1px solid #eee;
        border-radius: 2px;
        color: #777;
        /*min-width: 250px;*/
        /*max-width: 100%;*/
        width: 100%;
    }

    .chat-message .message-content img.post-image {
        max-width: 100%;
        max-height: 100%;
    }

    .chat-message .message-content span {
        color: #777;
    }

    .chat-message .message-content .author {
        color: #1a6baa;
        font-size: 12px;
        font-weight: bold;
    }

    .chat-message .message-content .content {
        display: block;
        padding: 2px 0;
    }

    .chat-message .message-content .timestamp {
        font-size: 12px;
        color: #999;
        float: right;
        line-height: 21px;
        margin: 0 5px;
    }

    .chat-message .message-avatar {
        width: 40px;
        height: 40px;
        float: left;
        margin-right: 10px;
        border-radius: 21px;
    }

    .ismine {
        flex-direction: row-reverse;
    }

    .ismine .message-content {
        background: #68c6e3;
    }

    .ismine .message-content .author,
    .ismine .message-content .timestamp,
    .ismine .message-content .timestamp span,
    .ismine .message-content .content {
        color: white;
    }

    .ismine .message-content div {
        flex-direction: row-reverse;
    }

    .ismine .message-avatar {
        margin-right: 0;
        margin-left: 10px;
    }

.usersandfiles-container {
    display: flex;
    flex-direction: column;
}

    .usersandfiles-container .header {
        height: 40px;
        display: flex;
        align-items: center;
        padding: 10px;
        border-bottom: 1px solid #eee;
    }

    .usersandfiles-container .header h5 {
        margin: 0;
        font-weight: 400;
        text-transform: uppercase;
        color: #555;
        font-size: 16px;
    }

    .usersandfiles-container #users-list .userandfile {
        padding: 10px;
        display: flex;
        align-items: center;
    }

    .usersandfiles-container #files-list .userandfile {
        padding: 10px;
        display: flex;
        align-items: center;
    }

    .usersandfiles-container #users-list .userandfile img {
        width: 32px;
        height: 32px;
        margin-right: 5px;
    }

    .usersandfiles-container #files-list .userandfile img {
        width: 32px;
        height: 32px;
        margin-right: 5px;
    }


    .usersandfiles-container #users-list .userandfile .right-side {
        width: 100%;
        line-height: 16px;
        overflow: hidden;
    }

    .usersandfiles-container #files-list .userandfile .right-side {
        width: 100%;
        line-height: 16px;
        overflow: hidden;
    }

    .usersandfiles-container #users-list .userandfile .right-side span {
        display: block;
        font-size: 14px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .usersandfiles-container #files-list .userandfile .right-side span {
        display: block;
        font-size: 14px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .usersandfiles-container #users-list .userandfile:hover {
        background: #f2f2f2;
        cursor: pointer;
    }

    .usersandfiles-container #files-list .userandfile:hover {
        background: #f2f2f2;
        cursor: pointer;
    }

    .usersandfiles-container input {
        width: 100%;
        border: none;
        height: 50px;
        border-radius: 0;
        border-top: 1px solid #eee;
        background: #f2f2f2;
        margin-top: auto;
        text-indent: 10px;
    }

    body {
        background: #eee;
    }

    .app {
        display: flex;
        height: 100vh;
        justify-content: space-between;
        background: white;
        border: 1px solid #ccc;
    }

    .app .sidebar {
        width: 200px;
    }

    .app .main-content {
        flex-grow: 1;
    }

    .app .users-container {
        width: 230px;
    }

    input[type="radio"] {
        display: none;
    }

    input[type="radio"] + img {
        border-radius: 50%;
        border: 2px solid transparent;
        padding: 1px;
        cursor: pointer;
    }

    input[type="radio"]:checked + img {
        border-radius: 50%;
        border: 2px solid #5dca38;
        padding: 1px;
    }

    .login-container,
    .register-container {
        width: 350px;
        background: white;
        padding: 20px;
        border: 1px solid #ccc;
        border-radius: 2px;
        background: white;
        margin: auto;
    }

    .login-container h4,
    .register-container h4 {
        font-weight: 400;
    }

    .register-container {
        width: 450px;
    }

    .btn-sign-in,
    .btn-sign-up {
        width: 100%;
        background: #5d8a9e;
        color: white;
        font-weight: 500;
    }

    .login-container .profile-avatar {
        width: 96px;
        height: 96px;
        display: block;
        border-radius: 50%;
        margin: 20px auto;
    }

    .alert-dismissible {
        position: fixed;
        width: 500px;
        right: 25px;
        top: 25px;
    }
    /*overlay start*/
    .container {
        /*width: 200px;
        height: 200px;*/
        position: relative;
        margin: 0;
    }

    .box {
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        /*opacity: 0.8;*/ /* for demo purpose  */
    }

    .stack-top {
        width: 40px;
        height: 100px;
        z-index: 9;
        /*margin: 20px;*/ /* for demo purpose  */
    }