style.css

a,a:focus,a:hover{color:#fff;}.btn-secondary,.btn-secondary:hover,.btn-secondary:focus{color:#333;text-shadow:none;background-color:#fff;border:.05rem solid #fff;}html,body{height:100%;background-image:url("https://source.unsplash.com/collection/358545");background-size:cover;background-color:#333;}body{color:#5a5a5a;height:100%;font-family:'Segoe UI','冬青黑体简体中文','Microsoft YaHei','微软雅黑',STXihei,'华文黑体',SimSun,'中易宋体',sans-serif;}body{display:-ms-flexbox;display:-webkit-box;display:flex;-ms-flex-pack:center;-webkit-box-pack:center;justify-content:center;color:#fff;text-shadow:0 .05rem .1rem rgba(0,0,0,.5);box-shadow:inset 0 0 5rem rgba(0,0,0,.5);}.cover-container{max-width:42em;}.masthead{margin-bottom:2rem;}.masthead-brand{margin-bottom:0;}.nav-masthead .nav-link{padding:.25rem 0;font-weight:700;color:rgba(255,255,255,.5);background-color:transparent;border-bottom:.25rem solid transparent;}.nav-masthead .nav-link:hover,.nav-masthead .nav-link:focus{border-bottom-color:rgba(255,255,255,.25);}.nav-masthead .nav-link + .nav-link{margin-left:1rem;}.nav-masthead .active{color:#fff;border-bottom-color:#fff;}@media (min-width:48em){.masthead-brand{float:left;}.nav-masthead{float:right;}}.cover{padding:0 1.5rem;}.cover .btn-lg{padding:.75rem 1.25rem;font-weight:700;}.mastfoot{color:rgba(255,255,255,.5);}.invisible{visibility:hidden;}.site-wrapper-inner{display:table-cell;vertical-align:top;}.site-wrapper{display:table;width:100%;height:100%;min-height:100%;}.chromeframe{margin:0.2em 0;background:#ccc;color:#000;padding:0.2em 0;}#loader-wrapper{position:fixed;top:0;left:0;width:100%;height:100%;z-index:999999;}#loader{display:block;position:relative;left:50%;top:50%;width:150px;height:150px;margin:-75px 0 0 -75px;border-radius:50%;border:3px solid transparent;border-top-color:#212529;-webkit-animation:spin 2s linear infinite;-ms-animation:spin 2s linear infinite;-moz-animation:spin 2s linear infinite;-o-animation:spin 2s linear infinite;animation:spin 2s linear infinite;z-index:1001;}#loader:before{content:"";position:absolute;top:5px;left:5px;right:5px;bottom:5px;border-radius:50%;border:3px solid transparent;border-top-color:#212529;-webkit-animation:spin 3s linear infinite;-moz-animation:spin 3s linear infinite;-o-animation:spin 3s linear infinite;-ms-animation:spin 3s linear infinite;animation:spin 3s linear infinite;}#loader:after{content:"";position:absolute;top:15px;left:15px;right:15px;bottom:15px;border-radius:50%;border:3px solid transparent;border-top-color:#212529;-moz-animation:spin 1.5s linear infinite;-o-animation:spin 1.5s linear infinite;-ms-animation:spin 1.5s linear infinite;-webkit-animation:spin 1.5s linear infinite;animation:spin 1.5s linear infinite;}@-webkit-keyframes spin{0%{-webkit-transform:rotate(0deg);-ms-transform:rotate(0deg);transform:rotate(0deg);}100%{-webkit-transform:rotate(360deg);-ms-transform:rotate(360deg);transform:rotate(360deg);}}@keyframes spin{0%{-webkit-transform:rotate(0deg);-ms-transform:rotate(0deg);transform:rotate(0deg);}100%{-webkit-transform:rotate(360deg);-ms-transform:rotate(360deg);transform:rotate(360deg);}}#loader-wrapper .loader-section{position:fixed;top:0;width:51%;height:100%;background:#ffc107;z-index:1000;-webkit-transform:translateX(0);-ms-transform:translateX(0);transform:translateX(0);}#loader-wrapper .loader-section.section-left{left:0;}#loader-wrapper .loader-section.section-right{right:0;}.loaded #loader-wrapper .loader-section.section-left{-webkit-transform:translateX(-100%);-ms-transform:translateX(-100%);transform:translateX(-100%);-webkit-transition:all 0.7s 0.3s cubic-bezier(0.645,0.045,0.355,1.000);transition:all 0.7s 0.3s cubic-bezier(0.645,0.045,0.355,1.000);}.loaded #loader-wrapper .loader-section.section-right{-webkit-transform:translateX(100%);-ms-transform:translateX(100%);transform:translateX(100%);-webkit-transition:all 0.7s 0.3s cubic-bezier(0.645,0.045,0.355,1.000);transition:all 0.7s 0.3s cubic-bezier(0.645,0.045,0.355,1.000);}.loaded #loader{opacity:0;-webkit-transition:all 0.3s ease-out;transition:all 0.3s ease-out;}.loaded #loader-wrapper{visibility:hidden;-webkit-transform:translateY(-100%);-ms-transform:translateY(-100%);transform:translateY(-100%);-webkit-transition:all 0.3s 1s ease-out;transition:all 0.3s 1s ease-out;}.no-js #loader-wrapper{display:none;}.no-js h1{color:#222222;}#loader-wrapper .load_title{color:#FFF;font-size:19px;width:100%;text-align:center;z-index:9999999999999;position:absolute;top:60%;opacity:1;line-height:30px;}#loader-wrapper .load_title span{font-weight:normal;font-style:italic;font-size:13px;color:#FFF;opacity:0.5;}