ul.side-nav li.logo {
	text-align: center;
	margin-top: 32px;
	margin-bottom: 16px;
	border-bottom: 1px solid #ddd;
}

ul.side-nav li.logo:hover {
	background-color: transparent;
}

#logo-container {
	height: 57px;
	margin-bottom: 32px;
}

#front-page-logo {
	display: inline-block;
	height: 100%;
	pointer-events: none;
}

main {
    flex: 1 0 auto;
}
nav {
  background-color:#e0e0e0;
}
body {
  color: #ccc;
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    background-image: url('/bg2.jpg');

    background-size: cover;          /* 背景图等比放大，铺满整个容器 */
    background-repeat: no-repeat;    /* 不重复 */
    background-position: center;     /* 居中 */
    background-attachment: fixed;    /* 背景固定，不随页面滚动 */
    min-height: 100vh;               /* 至少等于视口高度 */
}
footer {
	width: 100%;
	height: 10%;
	bottom: 0px;
}

/* fallback */
@font-face {
  font-family: 'Material Icons';
  font-style: normal;
  font-weight: 400;
  src: local('Material Icons'), local('MaterialIcons-Regular'), url('../fonts/1Y.woff2') format('woff2');
}

.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
}
#recent_solves td{
  padding:0;
}
.btn-large{
  /* background-color: #40506a; */
  background-color: #04103e;
  /* width: 20%; */
  min-height: 100px;
  line-height: 1;
  border: 2px solid;
  box-shadow: none;
}
.btn-large:hover{
  background-color: #3a4860;
  box-shadow: none;
}  
.tabs .tab a{
  color:#b9b9b9;
}
.tabs .tab a:hover, .tabs .tab a.active{
  color:#444444;
}
.tabs .indicator{
  background-color:#d0d0d0;
}
#headline {
  margin: auto;
  text-align: center;
  text-shadow: 10px 7px 20px #949494;
  font-size: 8em;
  font-family: 'Open Sans', sans-serif;
  font-weight: 800;
  color:#ffffff;
  letter-spacing: -0.02em;
  line-height: 1.2em;
}
ul.countdown {
  list-style: none;
  margin: 75px 0;
  margin-bottom: 0;
  padding: 0;
  display: block;
  text-align: center;
}
ul.countdown li {
  display: inline-block;
}
ul.countdown li span {
  font-size: 80px;
  font-weight: 300;
  line-height: 80px;
}
ul.countdown li.seperator {
  font-size: 80px;
  line-height: 70px;
  vertical-align: top;
}
ul.countdown li p {
  color: #a7abb1;
  font-size: 14px;
}
.modal{
  width:45%;
}
#ques_con a.btn{
  text-transform: capitalize;
}
@media only screen and (max-width: 992px){
  .modal {
      width: 80%;
  }
}
.questionsType .col{
  min-height: 100px;
}
.tinyImg{
  width: 50px;
  height: 50px;
  border-radius: 50px;
}
.tmp1{
  text-transform: capitalize;
}
/* account base-info img遮罩层*************/
/*
.headImgs {
    //margin: 20px 400px 0 400px;
    //position: relative;
    //width: 531px;
    //height: 354px;
}
.mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background: rgba(101, 101, 101, 0.6);
    color: #ffffff;
    opacity: 0;
}

.headImgs a:hover .mask {
    opacity: 1;           
}*/


/*************/
/* challengs 滚动条部分*/
.scroll-bar1::-webkit-scrollbar {/*滚动条整体样式*/
  width: 10px;     /*高宽分别对应横竖滚动条的尺寸*/
  height: 1px;
}
.scroll-bar1::-webkit-scrollbar-thumb {/*滚动条里面小方块*/
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
  background: #535353;
}
.scroll-bar1::-webkit-scrollbar-track {/*滚动条里面轨道*/
  -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
  border-radius: 10px;
  background: #EDEDED;
}

/********challenge 使用*******/
.progress{
  width: 80%;
}