使用bootstrap3开发响应式网站

.timeline { list-style: none; padding: 20px 0 20px; position: relative;}.timeline:before { top: 0; bottom: 0; position: absolute; content: " "; width: 3px; background-color: #eeeeee; left: 50%;  margin-left: -1.5px;}.timeline > li { margin-bottom: 20px; position: relative;}.timeline > li:before,.timeline > li:after { content: " "; display: table;}.timeline > li:after { clear: both;}.timeline > li:before,.timeline > li:after { content: " "; display: table;}.timeline > li:after { clear: both;}.timeline > li > .timeline-panel { width: 46%; float: left; border: 1px solid #d4d4d4; border-radius: 2px; padding: 20px; position: relative; -webkit-box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175); box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175); }.timeline > li > .timeline-panel:before { position: absolute; top: 26px; right: -15px; display: inline-block; border-top: 15px solid transparent; border-left: 15px solid #ccc; border-right: 0 solid #ccc; border-bottom: 15px solid transparent; content: " "; }.timeline > li > .timeline-panel:after { position: absolute; top: 27px; right: -14px; display: inline-block; border-top: 14px solid transparent; border-left: 14px solid #fff; border-right: 0 solid #fff; border-bottom: 14px solid transparent; content: " ";}.timeline > li > .timeline-badge { color: #fff; width: 50px; height: 50px; line-height: 50px; font-size: 1.4em; text-align: center; position: absolute; top: 16px; left: 50%; margin-left: -25px; background-color: #999999; z-index: 100; border-top-right-radius: 50%; border-top-left-radius: 50%; border-bottom-right-radius: 50%; border-bottom-left-radius: 50%;}.timeline > li.timeline-inverted > .timeline-panel { float: right;}.timeline > li.timeline-inverted > .timeline-panel:before { border-left-width: 0; border-right-width: 15px; left: -15px; right: auto;}.timeline > li.timeline-inverted > .timeline-panel:after { border-left-width: 0; border-right-width: 14px; left: -14px; right: auto;}.timeline-badge.primary { background-color: #2e6da4 !important;}.timeline-badge.success { background-color: #3f903f !important;}.timeline-badge.warning { background-color: #f0ad4e !important;}.timeline-badge.danger { background-color: #d9534f !important;}.timeline-badge.info { background-color: #5bc0de !important;}.timeline-title { margin-top: 0; color: inherit;}.timeline-body > p,.timeline-body > ul { margin-bottom: 0;}.timeline-body > p + p { margin-top: 5px;}@media (max-width: 767px) { ul.timeline:before { left: 40px; } ul.timeline > li > .timeline-panel { width: calc(100% - 90px); width: -moz-calc(100% - 90px); width: -webkit-calc(100% - 90px);  } ul.timeline > li > .timeline-badge { left: 15px; margin-left: 0; top: 16px; } ul.timeline > li > .timeline-panel { float: right; } ul.timeline > li > .timeline-panel:before { border-left-width: 0; border-right-width: 15px; left: -15px; right: auto; } ul.timeline > li > .timeline-panel:after { border-left-width: 0; border-right-width: 14px; left: -14px; right: auto; }}<ul class="timeline"><li>  <div class="timeline-badge"><i class="ion-leaf"></i></div>  <div class="timeline-panel" style="width: 46%;">  <div class="timeline-heading">   <h4 class="timeline-title">安东尼罗宾・简介</h4>   <p><small class="text-muted"><i class="glyphicon glyphicon-time"></i></small></p>  </div>  <div class="timeline-body">   <p>他是一位白手起家事业成功的亿万富翁，是当今最成功的世界级潜能开发专家；他协助职业球队、企业总裁、国家元首激发潜能，渡过各种困境及低潮。曾辅导过多位皇室的家庭成员，被美国前总统克林顿、戴安娜王妃聘为个人顾问；曾为众多世界名人提供咨询，包括南非总统曼拉、前苏联总统戈尔巴乔夫、世界网球冠军安德烈•阿加西等；   </p>  </div>  </div> </li> <li>......................</li></ul>

 $(function() { $(window).resize(function() {  initTimePanelSize(); }); initTimePanelSize(); function initTimePanelSize(){  width = $(this).width();  //alert(width);  if (width <= 767) {   $('div.timeline-panel').width($(this).width() - 90);  } else {   $('div.timeline-panel').css('width', '46%');  }  } });