html, body {
  height: 100%;
}

.welcome .nav {
  width: 91%;
  padding-left: 7px:
}

h2 {
  text-align: center;
}

li {
  border:0 #f2f2f2 solid;
  border-bottom-width:1px;
}

.welcome {
  padding-left: 8px;
}

.header {
  background-color: lightgrey;
  position: fixed;
  height: 90px;
  width: 100%;
  z-index: 1;
}

.main-content {
  position: fixed;
  padding-top: 90px;
  height: 100vh;
  width: 100%;
}

.welcome-text {
  margin-top: 12px;
  margin-right: 20px;
}

.add-room-button {
  margin-top: 15px;
  margin-left: 10px;
}


/*collapsed sidebar styles */
@media screen and (max-width: 767px) {
  .main-content {
    width: 100%;
  }

  .header-content {
    padding-top: 10px;
  }

  .top-header {
    margin-top: 15px;
  }

  .navbar-brand {
    height: 60px;
    margin-top: -6px;
  }

  .navbar-brand>img {
    display: block;
    padding: 0px;
    margin-top: 4px;
    height: 45px;
    width: 122px;
  }

  .navbar-toggle {
    margin-top: 16px;
  }

  .modal-dialog {
    min-width: 100px;
    max-width: 200px;
  }

  ul {
    overflow-y: scroll;
  }

  .sidebar {
    position: absolute;
    width: 40%;
    min-width: 150px;
    height: 100%;
    overflow-y: scroll;
    background-color: #a6a6a6;
  }

  .sidebar-brand {
    padding-left: 10px;
  }



/*Messages container and sender*/
    .chatroom-container {
      /*flex*/
      display: flex;
      flex-direction: column;
      height: 100%;
      width: 100%;
      padding-left: 15px;
    }

    .message-container {
      /*flex*/
      flex-grow: 1;
      order: 1;
      display: flex;
      flex-direction: column;
      width: 100%;
      padding: 0px;
      padding-left: 20px;
      padding-right: 10px;
    }

    .message-scroll {
      overflow-y: scroll;
      padding-left: 10px;
      padding-right: 5px;
    }

    .messages {
      flex-grow: 0;
      line-height: 3rem;
      margin-top: 2px;
      margin-bottom: 6px;
      border-radius: 25px;
      background: lightblue;
    }

    .messages:first-child {
      margin-top: 10px;
    }

    .sender-container {
      /*flex*/
      flex-grow: 0;
      order: 2;
      min-height: 52px;
      margin-bottom: 95px;
    }

    .message-sender {
      padding-left: 20px;
      width: 100%;
      padding-top: 10px;
    }

    .message-text-box {
      display: inline;
      float: left;
      width: 75%;
    }

    .send-button {
      display: inline;
      padding-left: 10px;
    }


/*messages*/
    .message-user{
      font-family: raleway, sans-serif;
      font-size: 2rem;
      font-weight: bold;
      padding-left: 25px;
    }

    .message-content {
      font-family: raleway, sans-serif;
      font-size: 1.6rem;
      width: 77.3%;
      padding-left: 27px;
    }

    .message-sent-at {
      text-align: right;
      font-family: raleway, sans-serif;
      font-size: 1.2rem;
      padding-right: 25px;
      width: 100%;
    }
  }

@media screen and (min-width: 768px) {
  .navbar-brand>img {
    display: block;
    padding: 0px;
    height: 68px;
    width: 200px;
  }

  .navbar-brand {
    height: 90px;
    padding-top: 9px;
  }

  .sidebar-large {
    display: inline;
    float: left;
    position: relative;
    background-color: #a6a6a6;
    height: 100%;
    overflow-y: scroll;
    padding-right: 0;
    }

  .modal-dialog {
    width: 300px;
  }


/*Messages container and sender*/
  .chatroom-container {
    /*flex*/
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  .message-container {
    /*flex*/
    flex-grow: 1;
    order: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    padding: 0px;
    padding-left: 20px;
    padding-right: 10px;
  }

  .message-scroll {
    overflow-y: scroll;
    padding-left: 10px;
    padding-right: 5px;
  }

  .messages {
    flex-grow: 0;
    line-height: 3rem;
    margin-top: 2px;
    margin-bottom: 6px;
    border-radius: 25px;
    background: lightblue;
  }

  .messages:first-child {
    margin-top: 10px;
  }

  .sender-container {
    /*flex*/
    flex-grow: 0;
    order: 2;
    min-height: 52px;
  }

  .message-sender {
    width: 100%;
    padding-left: 20px;
    padding-top: 10px;
  }

  .message-text-box {
    display: inline;
    float: left;
    width: 87%;
  }

  .send-button {
    display: inline;
    padding-left: 10px;
  }


  /*messages*/
  .message-user{
    display: inline-block;
    font-family: raleway, sans-serif;
    font-size: 2rem;
    font-weight: bold;
    padding-left: 25px;
  }

  .message-content {
    display: inline-block;
    font-family: raleway, sans-serif;
    font-size: 1.6rem;
  }

  .message-sent-at {
    display: inline-block;
    text-align: right;
    font-family: raleway, sans-serif;
    font-size: 1.2rem;
    padding-right: 25px;
  }
}