#big-background {
  width: 100%;
  text-align: center;
  height: 680px;
  overflow: hidden;  
  pointer-events: none;
}

@media only screen and (max-width: 767px) {
  #big-background {
    height: 340px;    
    margin: 0 -5px;
    width: calc(100% + 10px);
  }
  #big-background video{
    display: block;
    object-fit: cover;
    width: 100%;
    height: 100%;
  }
}
#sec1 {
  background: #1F2A66;
  color: #fff;
  padding: 25px 0;
}
#sec1:after {
  background: #1F2A66;
}
#sec1 h2 {
  text-align: center;
  font-size: 23px;
  line-height: 35px;
  letter-spacing: 0;
  font-weight: 900;
  margin-bottom: 5px;
}
#sec1 .txt {
  padding: 0 0 15px;
  text-align: justify;
}
#sec1 .bnr a {
  display: table;
  margin: 0 auto;
  background: #fff;
  color: #1F2A66;
  font-size: 12px;
  letter-spacing: 0;
  line-height: 18px;
  line-height: 20px;
  padding: 0 2px 0 5px;
  position: relative;
}
#sec1 .bnr a:after {
  content: '';
  width: 0px;
  height: 0px;
  border-style: solid;
  border-width: 10px 0 10px 10px;
  border-color: transparent transparent transparent #fff;
  transform: rotate(0deg);
  position: absolute;
  right: -10px;
  top: 0;
}
#sec1 .bnr a:hover {
  text-decoration: none;
}
@media screen and (min-width: 768px) {
  #sec1 {
    padding: 40px 0;
  }
  #sec1 h2 {
    font-size: 40px;
    line-height: 60px;
    margin-bottom: 18px;
  }
  #sec1 .txt {
    max-width: 660px;
    width: 100%;
    margin: 0 auto;
    padding-bottom: 20px;
  }
  #sec1 .bnr {
    text-align: center;
  }
  #sec1 .bnr a {
    font-size: 20px;
    line-height: 18px;
    line-height: 40px;
    padding: 0 2px 0 10px;
  }
  #sec1 .bnr a:after {
    border-width: 20px 0 20px 20px;
    right: -19px;
  }
  #sec1 .bnr a:hover {
    opacity: 0.8;
  }
}
#sec2 {
  padding: 50px 0 25px;
  background: #EAEFF9;
}
#sec2:after {
  background: #EAEFF9;
  bottom: -19px;
}
#sec2 h2 {
  font-size: 25px;
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: 0;
  text-align: center;
}
#sec2 .txt {
  line-height: 26px;
  letter-spacing: 0;
  margin: 5px 0 20px;
  padding: 0;
}
@media screen and (min-width: 768px) {
  #sec2 {
    padding: 95px 0 20px;
  }
  #sec2:after {
    bottom: -69px;
  }
  #sec2 h2 {
    font-size: 40px;
    border-bottom: 1px solid;
    padding-bottom: 5px;
  }
  #sec2 .txt {
    max-width: 660px;
    width: 100%;
    line-height: 48px;
    margin: 5px auto 20px;
  }
}
#sec3 {
  background: #1F2A66;
  color: #fff;
  padding: 45px 0 20px;
}
#sec3:after {
  background: #1F2A66;
  bottom: -19px;
}
#sec3 h2 {
  text-align: center;
  font-size: 23px;
  line-height: 35px;
  letter-spacing: 0;
  font-weight: 900;
  margin-bottom: 5px;
}
#sec3 .txt {
  padding: 0;
}
@media screen and (min-width: 768px) {
  #sec3 {
    padding: 95px 0 20px;
  }
  #sec3:after {
    bottom: -69px;
  }
  #sec3 h2 {
    font-size: 40px;
    line-height: 60px;
    margin: 0 1px 25px;
  }
  #sec3 .txt {
    max-width: 660px;
    width: 100%;
    margin: 0 auto;
  }
}
#sec4 {
  background: #fff;
  padding: 50px 0 25px;
}
#sec4:after {
  background: #fff;
  bottom: -19px;
}
#sec4 .box {
  max-width: 335px;
  width: 100%;
  margin: 0 auto 25px;
  background: #fff;
  border: 2px solid #937e2a;
  position: relative;
  padding: 12px;
}
#sec4 .box:before {
  content: '';
  border: 2px solid #1F2A66;
  position: absolute;
  left: 1px;
  right: -5px;
  top: 1px;
  bottom: -5px;
  z-index: 1;
}
#sec4 .box:after {
  content: '';
  background: #fff;
  position: absolute;
  left: 1px;
  right: -5px;
  top: 1px;
  bottom: -5px;
  z-index: -1;
}
#sec4 .box h3 {
  text-align: center;
  font-size: 21px;
  letter-spacing: 0.05em;
  line-height: 30px;
  font-weight: 900;
  border-bottom: 1px solid;
  padding-bottom: 10px;
  margin-bottom: 5px;
}
#sec4 .box .txt {
  padding: 0;
  line-height: 20px;
}
#sec4 .box .img {
  margin-top: 10px;
}
#sec4 .btn-link {
  text-align: center;
  margin: 0 auto 0;
}
#sec4 .btn-link a {
  color: #fff;
  background: #947F28;
}
#sec4 .btn-link a:after {
  border-color: transparent transparent transparent #947F28;
}
#sec4 .btn-link a:hover {
  background: #1F2A66;
  color: #fff;
}
#sec4 .btn-link a:hover:after {
  border-color: transparent transparent transparent #1F2A66;
}
@media screen and (min-width: 768px) {
  #sec4 {
    padding: 110px 0 20px;
  }
  #sec4:after {
    bottom: -69px;
  }
  #sec4 .box {
    max-width: 795px;
    width: 98%;
    padding: 25px 22px 20px 25px;
    border-width: 3px;
  }
  #sec4 .box:before {
    border-width: 3px;
    left: 2px;
    right: -8px;
    top: 2px;
    bottom: -8px;
  }
  #sec4 .box:after {
    left: 2px;
    right: -8px;
    top: 2px;
    bottom: -8px;
  }
  #sec4 .box h3 {
    text-align: left;
    font-size: 32px;
    padding-bottom: 15px;
    margin-bottom: 15px;
  }
  #sec4 .box .img {
    width: 50%;
    margin-top: 0;
  }
  #sec4 .box .txt {
    width: 48%;
    font-size: 20px;
    line-height: 36px;
    letter-spacing: 0;
    text-align: justify;
  }
  #sec4 .box .float-left {
    float: left;
  }
  #sec4 .box .float-right {
    float: right;
  }
}