style.css

/*
 * Anna Dorottya Simon, Márk Szabó
 * Neptun-ID: R48G73, EMX74N
 * Applied cryptography project - a postquantum messenger application
 * January 2017
 * This solution was submitted and prepared by Anna Dorottya Simon(R48G73), Márk Szabó(EMX74N) for the project assignment of the Applied cryptography project seminar course.
 * We declare that this solution is our own work.
 * We have put the necessary references wherever we have used bigger and/or complicated external codes in our project. For shorter code snippets (usually from Stack Overflow) we have put the reference there in most cases.
 * Given the uniqueness of the project (no other student had, have or will have the same project) we have published our code on GitHub with the permission of our professors.
 * Students’ regulation of Eötvös Loránd University (ELTE Regulations Vol. II. 74/C. § ) states that as long as a student presents another student’s work - or at least the significant part of it - as his/her own performance, it will count as a disciplinary fault. The most serious consequence of a disciplinary fault can be dismissal of the student from the University.
 */

html {
  height: 100%;
}

body {
  font: 18px "Ubuntu", sans-serif;
  line-height: 1.8;
  background: #FAFFFD;
  color: #342E37;
  height: 100%;
}

/* BEGIN signin form*/
#signin {
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #eee;
  height: calc(100% - 32px);
}

.form-signin {
  max-width: 330px;
  padding: 15px;
  margin: 0 auto;
}
.form-signin .form-signin-heading,
.form-signin .checkbox {
  margin-bottom: 10px;
}
.form-signin .checkbox {
  font-weight: normal;
}
.form-signin .form-control {
  position: relative;
  height: auto;
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
  padding: 10px;
  font-size: 16px;
}
.form-signin .form-control:focus {
  z-index: 2;
}
.form-signin input[type="text"] {
  margin-bottom: -1px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}
.form-signin input[type="password"] {
  margin-bottom: 10px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.progress {
  margin-top:10px;
  display:none;
}

/*END signin form */


#main {
  display:none;
  width: 95%;
  height: calc(100% - 32px);
}

@media (min-width: 768px) {
  #messageouterouter {
    height: 99%;
  }
}

@media (max-width: 767px) {
  #messageouterouter {
    margin-top:50px;
    height: calc(100% - 170px);
  }
  .navbar-absolute {
    position: absolute;
    margin: 0;
    left: 0px;
    right: 0px;
    top: 0px;
    padding-left: 15px;
    bottom: 0px;
    z-index:100;
  }
  #menu {
    margin-top:0px;
    background:#FFF;
  }
}

.height100 {
  height: 100%;
}

.width100 {
  width: 100%;
}

#messagesouter {
  display:none;
}

p {
  font-size: 16px;
  text-align: justify;
}

@media (min-width: 768px) {
  #messagetitle {
    padding:15px;
    /*prevent multiline, add ... http://stackoverflow.com/a/12913510*/
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  #menubrand {
    display:none;
  }
}

@media  (max-width: 767px) {
  #messagetitle {
    display:none;
  }
  #menubrand {
    padding-left:45px;
    width: calc(100% - 65px);
    /*prevent multiline, add ... http://stackoverflow.com/a/12913510*/
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}
.sidebar {
  background: #3C91E6;
  color: #FAFFFD;
}

li {
  width: 100%;
  /*prevent multiline, add ... http://stackoverflow.com/a/12913510*/
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.msgFromMe {
  margin-left: 10% !important;
  background-color: #9FD356;
}

.msgToMe {
  margin-right: 10% !important;
  background-color: #c0c6bc;
}

.msgFromMe, .msgToMe {
  padding: 5px;
  margin: 10px;
  border-radius: 10px;
}

textarea {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  width: 100%;
}

footer {background-color: #FA824C !important;}
/*footer a {color: #46876D;}
footer a:hover {color: #286B50;}
3C91E6*/

/*
 *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree.
 */
button {
  margin: 0 20px 0 0;
  width: 83px;
}

button#hangupButton {
    margin: 0;
}

video {
  --width: 45%;
  width: var(--width);
  height: calc(var(--width) * 0.75);
  margin: 0 0 20px 0;
  vertical-align: top;
}

video#localVideo {
  margin: 0 20px 20px 0;
}

div.box {
  margin: 1em;
}

@media screen and (max-width: 400px) {
  button {
    width: 83px;
    margin: 0 11px 10px 0;
  }

  video {
    height: 90px;
    margin: 0 0 0 0;
    width: calc(50% - 7px);
  }
  video#localVideo {
    margin: 0 0 0 0;
  }

}