*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}
body{
    background: #41B3A3;
}
header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    z-index: 1000;
    padding: 30px 100px;
}
header .logo{
    position: relative;
    color: #fff;
    font-weight: 700;
    font-size: 2em;
    text-decoration: none;
}
header ul{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
header ul li{
    position: relative;
    list-style: none;
    margin-left: 40px;
}
header ul li::before{
   content: "";
   position: absolute;
   height: 80%;
   width: 0;
   background-color: #41B3A3;
   right: 0;
   z-index: -1;
   top: 60%;
   transition: all 0.4s;
}
header ul li::after{
   content: "";
   position: absolute;
   height: 80%;
   width: 0;
   background-color: #41B3A3;
   left: 0;
   z-index: -1;
   bottom: 0;
   transition: all 0.5s;
}
header ul li a::before{
   position: absolute;
   content: "";
   height: 80%;
   width: 0;
   background-color: #41B3A3;
   bottom: 66.66%;
   left: 0;
   transition: all 0.5s;
   z-index: -1;
}
li:hover:before,
li:hover::after,
li:hover a::before{
   width: 100%;
}
header ul li a{
    color: #fff;
    text-decoration: none;
}
.banner{
    position: relative;
    width: 100%;
    min-height: 100vh;
}
.banner .imgBx{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.banner .imgBx img{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: 0.5s;
    background-position: center;
}
.banner .imgBx img.active{
    opacity: 1;
}
.controls{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 0;
    width: 80px;
}
.controls li{
    position: relative;
    width: 80px;
    height: 80px;
    background: #fff;
    list-style: none;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}
.controls li:hover{
    background: #41B3A3;
}
.controls li::before{
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border-left: 3px solid #111;
    border-bottom: 3px solid #111;
    transform: rotate(45deg);
}
.controls li:nth-child(2)::before{
    transform: rotate(225deg);
}
.contentBx {
    position: absolute;
    bottom: 0;
    max-width: 700px;
}

.contentBx div {
    display: none;
}
.contentBx div.active{
    display: block;
    padding: 30px;
    padding-left: 100px;
    background: rgba(0,0,0,0.2);
}
.contentBx div h2{
    color: #fff;
    font-size: 2em;
}
.contentBx div p{
    color: #fff;
    font-size: 1.1em;
}
.contentBx div a{
    color: #111;
    font-size: 1.1em;
    display: inline-block;
    padding: 10px 30px;
    background: #fff;
    margin-top: 10px;
    font-weight: 500;
    text-decoration: none;
    letter-spacing: 2px;
    text-transform: uppercase;
}