footer{}



nav ul li a{color: inherit;color: #000;}


#header{background-color: #fff; color: #000; }

#header a{color: #000; display: inline-block; width: 100%;}

#header li:hover>a{background-color: #113a7b;  color: #fff;  }
#header li:hover .sub{color: #113a7b; background-color: #fff}


.main-nav .drop-down .sub{background-color: transparent;color: #fff;}
.main-nav .drop-down .sub a{color: inherit; color: #fff;}
.main-nav .drop-down .sub li:hover>a{background-color: rgba(255,255,255,0.4);}
#header .main-nav > ul > li{padding: 0; width: 115px; text-align: center; margin-left: 60px; }
.main-nav .drop-down ul{position: absolute; top: 50px;  text-align: left; }
.main-nav .drop-down ul li{border-radius: 3px;}

.back-to-top{background-color: #113a7b}

#header ul{left: 0;}










#header{top: 0;position: relative; padding-top: 10px; height: 100px; box-shadow: 0 3px 10px #eee}

.ex{margin-top: 10px;width: 100%; height: 2200px; text-align: center; background-image: url(../img/RDC-de.png);
    background-repeat: no-repeat; background-size: auto; background-position: center;}
.ex img{margin: auto;}
.box{width: 100%;  text-align: center;margin: 30px 0 70px}


.ex2{margin-top: 10px;width: 100%; height: 2000px; text-align: center; background-image: url(../img/LM-de.png);
    background-repeat: no-repeat; background-size: auto; background-position: center;}


.ex3{margin-top: 10px;margin-bottom: 20px; width: 100%; height: 1700px; text-align: center; background-image: url(../img/GEN-de.png);
    background-repeat: no-repeat; background-size: auto; background-position: center;}


.ex4{margin-top: 10px;margin-bottom: 20px; width: 100%; height: 2000px; text-align: center; background-image: url(../img/RO-de.png);
    background-repeat: no-repeat; background-size: auto; background-position: center;}