* {
  margin: 0;
  padding: 0;

}
ul>li {
  list-style: none;
}

.kc-all {
  width: 100%;
  margin: 0 auto 50px;
}
.kc-all .tab-left {
  width: 100%;
  cursor: pointer;

}
.kc-all .tab-left ul>li {
  width: 155px;
  cursor: pointer;
  border-radius: 10px;
}
.kc-all .tab-right {
  width: 100%;
  box-sizing: border-box;
  padding: 10px;
}
.kc-all .tab-left li:last-of-type {
  border-bottom: none;
}
.tab-if-ul {
  display: flex;
  flex-wrap: wrap;
}
.kc-all .tab-left li {
  background-color: #282828;
  height: 25px;
  color: #ffffff;
  text-align: center;
  font-size: 20px;
  border-bottom: 1px solid #424242;
}
.kc-all .tab-left li.active {
  background-color: #e42e24;
}
.by-box0 {
  width: 1200px;
  height: 640px;
  margin: 0 auto;
}
.by-box0 .kc-all .tab-left .tab-if-ul {
  width: 600px;
  height: 70px;
  line-height: 32px;
  color: rgb(3, 91, 3);
  margin: 0 auto;
  cursor: pointer;
  display: flex;
  justify-content: space-around;
}
.by-box0 .kc-all .tab-left .tab-if-ul li {
  width: 220px;
  height: 32px;
  border: 1px solid black;
  font-size: 21px;
  text-align: center;
  margin-top: 17px;
  list-style: none;
}
.by-box0 .kc-all .tab-left .tab-if-ul .active {
  background: red;
  border: none;
  color: #fff;
}
.by-box0 .kc-all .tab-right {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.by-box0 .kc-all .tab-right img {
  width: 290px;
}
.by-title .by-title-left {
  float: left;
  width: 135px;
  height: 55px;
  background: #de1c20;
  color: #ffffff;
  font-size: 40px;
  text-align: center;
  line-height: 54px;
  margin-top: 7px;
}
.by-title {
  width: 430px;
  margin: 0 auto;
  padding-top: 20px;
  text-align: center;
}
.by-title .by-title-right {
  float: left;
  margin-left: 10px;
}
.by-title .by-title-right .p15 {
  font-size: 30px;
  color: black;
  font-weight: bold;
  letter-spacing: 12px;
}
.by-title .by-title-right .p16 {
  font-size: 15px;
  color: black;
}
.by-title-heng {
  width: 104px;
  margin: 10px auto 0;

}
.by-title-heng .heng-lf {
  float: left;
  width: 20%;
  height: 3px;
  background: #ee0b1c;

}
.by-title-heng .heng-rt {
  float: left;
  width: 80%;
  height: 3px;
  background: black;
}
/*.by-bt {
  text-align: center;
  font-size: 20px;
  color: #ffffff;
}*/
.tar-01 {
  width: 1200px;
}
.video1 {
  width: 290px;
  height: 200px;
}