* {
  box-sizing: border-box;
  font-family: SourceHanSansCN;
}

li,
i {
  font-weight: 400;
  font-style: normal;
  list-style: none;
}

.flex {
  text-align: left;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  display: -webkit-flex;
}

.flexbox {
  text-align: left;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  display: -webkit-flex;
  box-align: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}

.flex-row {
  box-direction: row;
  box-orient: horizontal;
  -webkit-box-orient: horizontal;
  -ms-flex-direction: row;
  flex-direction: row;
}

.flex-reverse {
  -webkit-flex-direction: row-reverse;
  -moz-flex-direction: row-reverse;
  -ms-flex-direction: row-reverse;
  -o-flex-direction: row-reverse;
  flex-direction: row-reverse;
}

/* 上下排列 */
.flex-column {
  -webkit-flex-direction: column;
  -moz-flex-direction: column;
  -ms-flex-direction: column;
  -o-flex-direction: column;
  flex-direction: column;
}

/*对齐方式*/
.flex-start {
  -webkit-box-align: start;
  -ms-flex-align: start;
  -webkit-align-items: flex-start;
  align-items: flex-start;
}

.flex-wrap {
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

/* 允许扩大到多行 */
.box-lines {
  box-orient: horizontal;
  -webkit-box-lines: multiple;
  -moz-box-lines: multiple;
}

.align-items-center {
  align-items: center;
  -webkit-align-items: center;
  -moz-align-items: center;
}

.align-items-flex-end {
  align-items: flex-end;
  -webkit-align-items: flex-end;
  -moz-align-items: flex-end;
}

.white-nowrap {
  white-space: nowrap;
}

.align-content-space-between {
  align-content: space-between;
  -webkit-align-content: space-between;
  -moz-align-content: space-between;
}

/* 居中 */
.justify-center {
  justify-content: center;
  -webkit-justify-content: center;
  -moz-justify-content: center;
}

/* 两端对齐 */
.justify-content_flex-justify {
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
}

/* 两端 */
.justify-space-between {
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  -webkit-justify-content: space-between;
  justify-content: space-between;
}

.justify-space-evenly {
  -webkit-justify-content: space-evenly;
  -moz-justify-content: space-evenly;
  justify-content: space-evenly;
}

.flex-shrink0 {
  box-sizing: border-box;
  -ms-flex-negative: 0;
  flex-shrink: 0;
}

.flex-shrink1 {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  -ms-flex-preferred-size: auto;
  flex-basis: auto;
  box-sizing: border-box;
}

.flex1 {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
}

.flex1_5 {
  -webkit-box-flex: 1.5;
  -ms-flex: 1.5;
  flex: 1.5;
}

.flex2 {
  -webkit-box-flex: 2;
  -ms-flex: 2;
  flex: 2;
}

.flex2_5 {
  -webkit-box-flex: 2.5;
  -ms-flex: 2.5;
  flex: 2.5;
}

.flex3 {
  -webkit-box-flex: 3;
  -ms-flex: 3;
  flex: 3;
}

.flex4 {
  -webkit-box-flex: 4;
  -ms-flex: 4;
  flex: 4;
}

.flex5 {
  -webkit-box-flex: 5;
  -ms-flex: 5;
  flex: 5;
}

.flex-none {
  flex: none;
}

.flexrow_wrap {
  flex-flow: row wrap;
}

/* 顶部对齐 */
.baseline {
  -webkit-box-align: baseline;
  -ms-flex-align: baseline;
  align-items: baseline;
}

.tIndex2 {
  text-indent: 2em;
}

.flex-1 {
  -webkit-box-flex: 1;
  -webkit-flex: 1;
  flex: 1;
}

.main-cotainer {
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  -ms-flex-preferred-size: auto;
  flex-basis: auto;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  min-width: 0;
}

.Mcontainer {
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  -ms-flex-preferred-size: auto;
  flex-basis: auto;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  min-width: 0;
  width: 100%;
  position: relative;
  min-height: 100vh;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-orient: vertical;
  -ms-flex-direction: column;
  flex-direction: column;
}

.flex-shrink1 {
  -ms-flex-negative: 1;
  flex-shrink: 1;
  -ms-flex-shrink: 1;
  -webkit-flex-shrink: 1;
  -ms-flex-preferred-size: auto;
  flex-basis: auto;
}

.space-between {
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  -webkit-justify-content: space-between;
  justify-content: space-between;
}

.space-around {
  -webkit-box-pack: justify;
  box-pack: justify;
  -ms-flex-pack: justify;
  -webkit-justify-content: space-around;
  -ms-justify-content: space-around;
  justify-content: space-around;
}

.vertical {
  -webkit-box-orient: vertical;
  -ms-flex-direction: column;
  flex-direction: column;
}

.justify-end {
  justify-content: flex-end;
  -webkit-justify-content: flex-end;
  -moz-justify-content: flex-end;
}

.flex {
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

/* 两端对齐 */
.justify-space-between {
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  -webkit-justify-content: space-between;
  -moz-justify-content: space-between;
  -ms-justify-content: space-between;
  justify-content: space-between;
}

/* 从左到右排齐 */
.flex-direction-row {
  -webkit-flex-direction: row;
  -ms-flex-direction: row;
  flex-direction: row;
}

/* 上下排齐 */
.flex-direction-column {
  -webkit-flex-direction: column;
  -ms-flex-direction: column;
  flex-direction: column;
}

.flex-1 {
  flex: 1;
}

.justify-space-evenly {
  -webkit-justify-content: space-evenly;
  -moz-justify-content: space-evenly;
  justify-content: space-evenly;
}

/*对齐方式*/
.flex-start {
  -webkit-box-align: start;
  -ms-flex-align: start;
  -webkit-align-items: flex-start;
  align-items: flex-start;
}

.self-end {
  -webkit-box-align: end;
  -ms-flex-align: end;
  -webkit-align-items: self-end;
  align-items: self-end;
}

/* 换行 */
.flex-wrap {
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

/* 允许扩大到多行 */
.box-lines {
  box-orient: horizontal;
  -webkit-box-lines: multiple;
  -moz-box-lines: multiple;
}

.align-items-center {
  align-items: center;
  -webkit-align-items: center;
  -moz-align-items: center;
}

/* 下对齐 */
.align-items-flex-end {
  align-items: flex-end;
  -webkit-align-items: flex-end;
  -ms-align-items: flex-end;
}

.justify-center {
  justify-content: center;
  -webkit-justify-content: center;
  -ms-justify-content: center;
  -moz-justify-content: center;
}

.white-nowrap {
  white-space: nowrap;
}

.align-content-space-between {
  align-content: space-between;
  -webkit-align-content: space-between;
  -ms-align-content: space-between;
  -moz-align-content: space-between;
}

img {
  vertical-align: middle;
}
.fwb {
  font-weight: bold;
}

.seckill_bg {
  width: 100%;
  background: url(../images/bg.png) no-repeat top center;
  background-size: 100%;
  margin: 0 auto;
  overflow: hidden;
  min-height: 100vh;
  padding-bottom: 100px;
}
.Scourse_btn.hand:hover {
  opacity: 0.8;
}
.seckill_logo {
  width: 256px;
  height: 70px;
  position: absolute;
  left: 5%;
}

.banner {
  margin: 30px auto;
  text-align: center;
}

.banner img {
  height: 480px;
}

.seckill_text {
  width: 540px;
  height: 100px;
  border-radius: 25px;
  background: linear-gradient(
    270deg,
    rgba(240, 33, 201, 1),
    rgba(127, 3, 251, 1) 100%
  );
  font-size: 32px;
  font-weight: bold;
  color: #ffffff;
  text-align: center;
  line-height: 40px;
  margin: -130px auto 0;
}

.stext1 {
  text-align: center;
  font-size: 32px;
  color: #fbfdfe;
  margin-top: 50px;
  font-weight: bold;
}

.stext2 {
  text-align: center;
  font-size: 173px;
  font-weight: bold;
  color: #ffffff;
  -webkit-text-stroke: 3px #ff0060;
  text-stroke: 3px #ff0060;
  margin-top: 46px;
  line-height: 1;
}

.stext3 {
  text-align: center;
  font-weight: bold;
  margin-top: 54px;
  font-size: 38px;
  color: #fbfdfe;
}

.seckill_time_box {
  width: 614px;
  height: 180px;
  border: 7px solid #fffad3;
  border-radius: 32px;
  margin-top: 24px;
  padding-top: 16px;
  background: url(../images/time_BG.png) no-repeat top center/100% 100%;
}

.seckill_time {
  width: 550px;
  height: 108px;
  border-radius: 28px;
  background: #ffffff;
  padding: 0 15px;
}

.seckill_time span {
  width: 54px;
  height: 69px;
  background: url(../images/time_icon.png) no-repeat top center/100% 100%;
  position: relative;
  font-size: 50px;
  color: #ffffff;
  font-weight: bold;
  margin: 0 2px;
}

.seckill_time img {
  width: 8px;
  height: 24px;
  margin: 0 6px;
}

.seckill_course_list {
  margin: 60px auto;
  width: 800px;
}
.Scourse_item {
  width: 100%;
  border: 10px solid #fffad3;
  border-radius: 46px;
  padding: 18px;
  height: 444px;
  margin-bottom: 60px;
  transition: all 0.2s;
}
.Scourse_item:hover {
  transform: translateY(-2px);
  box-shadow: 0px 2px 18px 6px rgba(137, 152, 185, 0.24);
}
.Scourse_item dl {
  background: rgba(255, 251, 249, 0.98);
  border-radius: 35px;
  position: relative;
  overflow: hidden;
  padding: 40px 24px 14px 24px;
}
.Scourse_item dl img {
  width: 380px;
}

.seckill_course_tag {
  width: 156px;
  height: 38px;
  color: #ffffff;
  background: #fb2055;
  border-radius: 0px 0px 9px 0px;
  font-size: 28px;
  font-weight: bold;
  text-align: center;
  position: absolute;
  top: 0;
  left: 0;
}

.Scourse_btn_box {
  width: 380px;
  height: 68px;
  background: linear-gradient(0deg, #fb2376 0%, #fb0238 100%);
  opacity: 0.9;
  border-radius: 23px;
  margin-top: 20px;
  color: #ffffff;
}
.fsize52 {
  font-size: 52px;
}
.Scourse_btn {
  width: 158px;
  background: #fe8e11;
  border-radius: 0px 23px 23px 0px;
  font-size: 24px;
  font-weight: bold;
  text-align: center;
  color: #ffffff;
}
.Scourse_btn_gray {
  background: #999999;
}
.Scourse_price {
  padding-left: 32px;
}
.Scourse_title {
  padding-top: 30px;
  font-size: 38px;
  font-weight: bold;
  color: #f10131;
  text-align: center;
}

.Scourse_explain {
  font-size: 26px;
  color: #000000;
  line-height: 48px;
  padding-left: 50px;
}

.seckill_rule {
  width: 800px;
  margin: 100px auto;
  color: #ffffff;
}
.seckill_rule_title {
  font-size: 36px;
  text-align: center;
  margin-bottom: 40px;
}
.seckill_rule li {
  font-size: 18px;
  line-height: 36px;
}

.cFFFFFF {
  color: #ffffff;
}

.seckill-title {
  width: 100%;
  height: 36px;
  background: #333;
  padding: 0 6px;
  position: relative;
}

.sidebar_fixed {
  position: fixed;
  right: 18px;
  bottom: 10%;
  z-index: 1001;
  height: 222px;
}
.sidebar-item,
.sidebar_user {
  width: 66px;
  height: 66px;
  position: relative;
}
.sidebar_user {
  margin-bottom: 24px;
}
.sidebar-item {
  background: #ffffff;
  position: relative;
  transition: 0.3s ease;
}
.consult-text {
  position: absolute;
  left: 0;
  bottom: -12px;
  width: 100%;
  height: 26px;
  background: #2e73ff;
  color: #fff;
  line-height: 26px;
  font-size: 12px;
  text-align: center;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.sidebar-item:hover a {
  background: #2e73ff;
  color: #ffffff;
}
.sidebar-item:hover {
  border-bottom: 1px solid #2e73ff;
}
.sidebar-item {
  border-bottom: 1px solid #e5eaf1;
}
.sidebar_user_img {
  position: absolute;
  width: 64px;
  height: 64px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #ffffff;
  border-radius: 50%;
}

.sidebar_user_img img {
  width: 50%;
  height: 50%;
}
.sidebar_avatar-shadow {
  position: absolute;
  top: -7px;
  left: -7px;
  width: 80px;
  height: 80px;
  opacity: 0.2;
  background: #ffffff;
  border-radius: 50%;
  -webkit-animation: avatar-shadow-twinkle 1s ease-in-out infinite alternate;
  animation: avatar-shadow-twinkle 1s ease-in-out infinite alternate;
}

@-webkit-keyframes avatar-shadow-twinkle {
  0% {
    -webkit-transform: scale(0.7);
    transform: scale(0.7);
  }

  100% {
    -webkit-transform: scale(1.08);
    transform: scale(1.08);
  }
}

@keyframes avatar-shadow-twinkle {
  0% {
    -webkit-transform: scale(0.7);
    transform: scale(0.7);
  }

  100% {
    -webkit-transform: scale(1.08);
    transform: scale(1.08);
  }
}

.icon_scale_active {
  position: absolute;
  content: "";
  left: 5px;
  top: 5px;
  width: 8px;
  height: 8px;
  background-color: #f63739;
  border-radius: 50%;
  -webkit-animation: scaleMomve ease-in-out 0.5s infinite;
  animation: scaleMomve ease-in-out 0.5s infinite;
}

@-webkit-keyframes scaleMomve {
  70% {
    -webkit-transform: scale(0.6);
    transform: scale(0.6);
  }
}

@keyframes scaleMomve {
  70% {
    -webkit-transform: scale(0.6);
    transform: scale(0.6);
  }
}